231311022332 has 48 divisors (see below), whose sum is σ = 446656103712. Its totient is φ = 104133765120.

The previous prime is 231311022329. The next prime is 231311022337. The reversal of 231311022332 is 233220113132.

It is a junction number, because it is equal to n+sod(n) for n = 231311022298 and 231311022307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231311022337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15519908 + ... + 15534804.

It is an arithmetic number, because the mean of its divisors is an integer number (9305335494).

Almost surely, 2^231311022332 is an apocalyptic number.

It is an amenable number.

231311022332 is a deficient number, since it is larger than the sum of its proper divisors (215345081380).

231311022332 is a wasteful number, since it uses less digits than its factorization.

231311022332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22238 (or 22236 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231311022332 its reverse (233220113132), we get a palindrome (464531135464).

The spelling of 231311022332 in words is "two hundred thirty-one billion, three hundred eleven million, twenty-two thousand, three hundred thirty-two".