231110331312 has 80 divisors (see below), whose sum is σ = 718237640960. Its totient is φ = 62556178176.

The previous prime is 231110331299. The next prime is 231110331343. The reversal of 231110331312 is 213133011132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18094363 + ... + 18107130.

It is an arithmetic number, because the mean of its divisors is an integer number (8977970512).

Almost surely, 2^231110331312 is an apocalyptic number.

It is an amenable number.

231110331312 is an abundant number, since it is smaller than the sum of its proper divisors (487127309648).

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

231110331312 is a wasteful number, since it uses less digits than its factorization.

231110331312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36201530 (or 36201524 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 231110331312 its reverse (213133011132), we get a palindrome (444243342444).

The spelling of 231110331312 in words is "two hundred thirty-one billion, one hundred ten million, three hundred thirty-one thousand, three hundred twelve".