Where does “इकत्तीस” come from?

इकत्तीस (Hindi) comes from Sanskrit एकत्रिंशत्, from Sanskrit त्रिंशत्, from Proto-Indo-Aryan triHśát, from Proto-Indo-Iranian triHćát, from Proto-Indo-European tridḱómt, from Proto-Indo-European tri-, from Proto-Indo-European tréyes — three.

इकत्तीस (Hindi): thirty-one

Definitions

thirty-one

Ancestry of “इकत्तीस”, step by step

Step	Language	Word	Meaning
1	Sanskrit	एकत्रिंशत्	thirty-one, 31
2	Sanskrit	त्रिंशत्	thirty
3	Proto-Indo-Aryan	triHśát	—
4	Proto-Indo-Iranian	triHćát	thirty
5	Proto-Indo-European	tridḱómt	thirty
6	Proto-Indo-European	tri-	three, threefold
7	Proto-Indo-European	tréyes	three

Words derived from “इकत्तीस”

इकत्तीसवाँ

Every word from Proto-Indo-European tréyes →Every word from Proto-Indo-European tri- →Every word from Proto-Indo-European tridḱómt →