131 is also the number of Samael, the Poison of God, a title of the Angel of Death. The Angel of Death is also known as Azrael, the Peacock Angel (Melek Taus, blessed be He!) of the Yezidis: "He who existed before all creatures is the Peacock Angel." Azrael, however, is the god of the Material World, not the Supernal, he was created by a god. I may tell you from experience that the "Vision of the Universal Peacock" is accompanied by rainbow flashes of colours, cognate with the Fool's motley, and the Coat of Many Colours (see Book of Thoth, p. 58.) This rainbow is representative of all that is material. It is the Pure White Light of the Supernals split by the prism of the material. The Eyes, of course, correspond to Ayin, the letter of the Devil card. Coincidentally, "peacocks" in Hebrew is TVVSYM = 131.
Samael, or Poison of God, has the same consonental pattern as "Small." (SMAL = 131) The Small is, of course, Hadit, the infinitessimal point.
"If I lift up my head,
I and my Nuit are one.
If I droop down mine head,
and shoot forth venom,
then is the rapture of the earth,
and I and the earth are one."
Liber Al - 1:26
Note that venom = poison = SM. We see here the Fool/Devil connection spelled out in Hadit. hadit is also motion, which brings us back to 5, as motion = Geburah, the fifth Sephirah. Looking further we see that Hadit in full is 555 (the number of the Phallus, see Gematria note in Equinox of the Gods.) or 5 X 111. Already having seen 5, we note that 111 is the number of Aleph, the letter of the Fool card spelled in full.
Finally, 131 is the Grrek value of Mako, son of Set. The Crocodile of Sebek who wears the Feather of Ma'at (see Book of Thoth ...again... p. 59.) Personally, I think that 131 has been sorely neglected in the Thelemic canon of holy numbers.
What follows is a list of Gematria equivalents of 131, from Hebrew, Greek, Coptic, Ugaritic and transliterated English.
ACSN - Accomodate, Put Up.
ILNYM - Underworld Ghosts [Ugaritic]
AMNM - Verily, Truely, Indeed.
AMOK - Amok [transliterated].
AMTz - Strength.
ANP - To Be Angry.
ASLM - To Convert to Islam.
APYM - Anger.
APN - Manner.
ATzYL - Peer, Gentleman; The Upper Arm.
BNGOV - When He Touches (Something unclean by contact with menses, Leviticus 15:23)
BPMT - Baphomet [transliterated].
HMVLYKK - Who Led You (Deuteronomy 8:15)
VBMLChMH - And By War (Deuteronomy 4:34)
VYChZQ - And He Hardened (The Heart of the Pharaoh, Exodus 9:12)
VMKSH - And a Covering (Exodus 26:14)
VMSKH - And Molten Image (Deuteronomy 27:15)
ThAOMAI - To Wonder At, Be Amazed [Greek].
TVVSYM - Peacocks.
YALMN - Widow, Bereave.
YAPYL - Darken, Obscure; Grow Dark; Black Out.
KMVSH - Capsule.
LALHYHN - To Their Gods (Numbers 25:2)
MAKO - Mako, Son of Set [transliterated].
MAMN - Trainer, Instructor.
MKVSH - Covered (a title of Keter).
MKSHV - Its Covering (Exodus 35:11)
MSVK - Hedge of Thorns.
MPAI - Spindle [Coptic].
MTzA - Find, Find Out.
NLKAL - Nelchael, a fallen angel.
SVLLH - Embankment; Dike; Battery.
SVSH - Mare.
SMAL - Samael, Poison of God, a title of the Angel of Death.
OVNH - Her/His/Its Iniquity (Leviticus 7:18, Numbers 15:31)
OVNH - Season, Term.
ONVH - Humility.
PAN - Pan [transliterated in Hebrew and natural in Greek]; All [Greek].
PELEIA - Dove [Greek].
TzVHL - Merry, Joyful, Exultant.
TzVLH - Depths (of the Sea).
TzMA - Thirst.