231557465304 has 96 divisors (see below), whose sum is σ = 720154843200. Its totient is φ = 66475823040.

The previous prime is 231557465303. The next prime is 231557465357. The reversal of 231557465304 is 403564755132.

231557465304 is a `hidden beast` number, since 2 + 3 + 1 + 557 + 4 + 65 + 30 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 231557465304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231557465303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7678914 + ... + 7709009.

It is an arithmetic number, because the mean of its divisors is an integer number (7501612950).

Almost surely, 2^231557465304 is an apocalyptic number.

231557465304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231557465304 is an abundant number, since it is smaller than the sum of its proper divisors (488597377896).

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

231557465304 is a wasteful number, since it uses less digits than its factorization.

231557465304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15387965 (or 15387958 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 45.

The spelling of 231557465304 in words is "two hundred thirty-one billion, five hundred fifty-seven million, four hundred sixty-five thousand, three hundred four".