231311022032 has 40 divisors (see below), whose sum is σ = 462824520192. Its totient is φ = 111875702400.

The previous prime is 231311022013. The next prime is 231311022037. The reversal of 231311022032 is 230220113132.

It is a junction number, because it is equal to n+sod(n) for n = 231311021995 and 231311022013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231311022037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1045358 + ... + 1247154.

Almost surely, 2^231311022032 is an apocalyptic number.

It is an amenable number.

231311022032 is an abundant number, since it is smaller than the sum of its proper divisors (231513498160).

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

231311022032 is a wasteful number, since it uses less digits than its factorization.

231311022032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204147 (or 204141 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231311022032 its reverse (230220113132), we get a palindrome (461531135164).

The spelling of 231311022032 in words is "two hundred thirty-one billion, three hundred eleven million, twenty-two thousand, thirty-two".