231513523324530 has 64 divisors (see below), whose sum is σ = 560634299648640. Its totient is φ = 61181344336896.

The previous prime is 231513523324513. The next prime is 231513523324547. The reversal of 231513523324530 is 35423325315132.

It is an interprime number because it is at equal distance from previous prime (231513523324513) and next prime (231513523324547).

It is a super-2 number, since 2×231513523324530² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17279544 + ... + 27597276.

It is an arithmetic number, because the mean of its divisors is an integer number (8759910932010).

Almost surely, 2^{231513523324530} is an apocalyptic number.

231513523324530 is an abundant number, since it is smaller than the sum of its proper divisors (329120776324110).

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

231513523324530 is a wasteful number, since it uses less digits than its factorization.

231513523324530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324475.

The product of its (nonzero) digits is 972000, while the sum is 42.

Adding to 231513523324530 its reverse (35423325315132), we get a palindrome (266936848639662).

The spelling of 231513523324530 in words is "two hundred thirty-one trillion, five hundred thirteen billion, five hundred twenty-three million, three hundred twenty-four thousand, five hundred thirty".