231321112021320 has 64 divisors (see below), whose sum is σ = 694204380288000. Its totient is φ = 61664203719168.

The previous prime is 231321112021253. The next prime is 231321112021381. The reversal of 231321112021320 is 23120211123132.

It is a super-2 number, since 2×231321112021320² (a number of 30 digits) contains 22 as substring.

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

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 15 ways as a sum of consecutive naturals, for example, 334436725 + ... + 335127684.

It is an arithmetic number, because the mean of its divisors is an integer number (10846943442000).

Almost surely, 2^{231321112021320} is an apocalyptic number.

231321112021320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231321112021320 is an abundant number, since it is smaller than the sum of its proper divisors (462883268266680).

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

231321112021320 is a wasteful number, since it uses less digits than its factorization.

231321112021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669567302 (or 669567298 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 231321112021320 its reverse (23120211123132), we get a palindrome (254441323144452).

The spelling of 231321112021320 in words is "two hundred thirty-one trillion, three hundred twenty-one billion, one hundred twelve million, twenty-one thousand, three hundred twenty".