231320282023131 has 32 divisors (see below), whose sum is σ = 358268336025600. Its totient is φ = 130015432298880.

The previous prime is 231320282023093. The next prime is 231320282023139. The reversal of 231320282023131 is 131320282023132.

It is not a de Polignac number, because 231320282023131 - 2³⁵ = 231285922284763 is a prime.

It is a super-2 number, since 2×231320282023131² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231320282023092 and 231320282023101.

It is not an unprimeable number, because it can be changed into a prime (231320282023139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380715805 + ... + 381322913.

It is an arithmetic number, because the mean of its divisors is an integer number (11195885500800).

Almost surely, 2^{231320282023131} is an apocalyptic number.

231320282023131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231320282023131 is a deficient number, since it is larger than the sum of its proper divisors (126948054002469).

231320282023131 is a wasteful number, since it uses less digits than its factorization.

231320282023131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904619.

The product of its (nonzero) digits is 20736, while the sum is 33.

Subtracting from 231320282023131 its reverse (131320282023132), we obtain a palindrome (99999999999999).

The spelling of 231320282023131 in words is "two hundred thirty-one trillion, three hundred twenty billion, two hundred eighty-two million, twenty-three thousand, one hundred thirty-one".