12431551232 has 36 divisors (see below), whose sum is σ = 25128690720. Its totient is φ = 6137084928.

The previous prime is 12431551229. The next prime is 12431551283. The reversal of 12431551232 is 23215513421.

It is a junction number, because it is equal to n+sod(n) for n = 12431551195 and 12431551204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287123 + ... + 327570.

Almost surely, 2^12431551232 is an apocalyptic number.

It is an amenable number.

12431551232 is an abundant number, since it is smaller than the sum of its proper divisors (12697139488).

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

12431551232 is an frugal number, since it uses more digits than its factorization.

12431551232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614788 (or 614774 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The spelling of 12431551232 in words is "twelve billion, four hundred thirty-one million, five hundred fifty-one thousand, two hundred thirty-two".