231312311232 has 56 divisors (see below), whose sum is σ = 622386969600. Its totient is φ = 75797250816.

The previous prime is 231312311221. The next prime is 231312311257. The reversal of 231312311232 is 232113213132.

231312311232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10198432 + ... + 10221087.

Almost surely, 2^231312311232 is an apocalyptic number.

It is an amenable number.

231312311232 is an abundant number, since it is smaller than the sum of its proper divisors (391074658368).

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

231312311232 is a wasteful number, since it uses less digits than its factorization.

231312311232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20419593 (or 20419583 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 231312311232 its reverse (232113213132), we get a palindrome (463425524364).

The spelling of 231312311232 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred eleven thousand, two hundred thirty-two".