231531500232 has 48 divisors (see below), whose sum is σ = 647292372480. Its totient is φ = 74687580000.

The previous prime is 231531500197. The next prime is 231531500257. The reversal of 231531500232 is 232005135132.

It is a happy number.

231531500232 is a `hidden beast` number, since 2 + 3 + 153 + 1 + 500 + 2 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 231531500196 and 231531500205.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51864144 + ... + 51868607.

It is an arithmetic number, because the mean of its divisors is an integer number (13485257760).

Almost surely, 2^231531500232 is an apocalyptic number.

It is an amenable number.

231531500232 is an abundant number, since it is smaller than the sum of its proper divisors (415760872248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231531500232 is a wasteful number, since it uses less digits than its factorization.

231531500232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103732794 (or 103732787 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 231531500232 its reverse (232005135132), we get a palindrome (463536635364).

It can be divided in two parts, 23153 and 1500232, that added together give a triangular number (1523385 = T₁₇₄₅).

The spelling of 231531500232 in words is "two hundred thirty-one billion, five hundred thirty-one million, five hundred thousand, two hundred thirty-two".