231

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 3 (3 unique) factors are:
3
7
11

Its 8 divisors are:
1
3
7
11
21
33
77
231
Its aliquote sum is:
153
makeing it a deficient number.

As Unicode codepoint (since version 1.1) this number represents this character:ç LATIN SMALL LETTER C WITH CEDILLA in Latin_1_Sup (Source: https://www.unicode.org/Public/UCD/latest/ucdxml/ucd.all.grouped.zip); HTML: ç

In the work of Johann Sebastian Bach BWV 231 is Sei Lob und Preis mit Ehren (Choralchor)

The number appears at position 136 of the decimal digits of π surrounded by
0664709384460955058223172535940812848111745 Source: The Pi-Search Page

Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 1002.06ms; cpu: 109.465999999998ms)