531253012431320 has 64 divisors (see below), whose sum is σ = 1195747108621920. Its totient is φ = 212425159716864.

The previous prime is 531253012431301. The next prime is 531253012431341. The reversal of 531253012431320 is 23134210352135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1291648424 + ... + 1292059656.

Almost surely, 2^{531253012431320} is an apocalyptic number.

It is an amenable number.

531253012431320 is an abundant number, since it is smaller than the sum of its proper divisors (664494096190600).

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

531253012431320 is a wasteful number, since it uses less digits than its factorization.

531253012431320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422724 (or 422720 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 531253012431320 its reverse (23134210352135), we get a palindrome (554387222783455).

The spelling of 531253012431320 in words is "five hundred thirty-one trillion, two hundred fifty-three billion, twelve million, four hundred thirty-one thousand, three hundred twenty".