231315414012520 has 64 divisors (see below), whose sum is σ = 551379253032000. Its totient is φ = 87035363681280.

The previous prime is 231315414012509. The next prime is 231315414012533. The reversal of 231315414012520 is 25210414513132.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 92686170 + ... + 95149129.

It is an arithmetic number, because the mean of its divisors is an integer number (8615300828625).

Almost surely, 2^{231315414012520} is an apocalyptic number.

231315414012520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231315414012520 is an abundant number, since it is smaller than the sum of its proper divisors (320063839019480).

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

231315414012520 is a wasteful number, since it uses less digits than its factorization.

231315414012520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187837138 (or 187837134 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 231315414012520 its reverse (25210414513132), we get a palindrome (256525828525652).

The spelling of 231315414012520 in words is "two hundred thirty-one trillion, three hundred fifteen billion, four hundred fourteen million, twelve thousand, five hundred twenty".