1312715172 has 12 divisors (see below), whose sum is σ = 3063002096. Its totient is φ = 437571720.

The previous prime is 1312715167. The next prime is 1312715219. The reversal of 1312715172 is 2715172131.

1312715172 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1312715172² = 3446442245597979168, which contains 22 as substring.

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, 54696454 + ... + 54696477.

Almost surely, 2^1312715172 is an apocalyptic number.

1312715172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312715172 is an abundant number, since it is smaller than the sum of its proper divisors (1750286924).

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

1312715172 is a wasteful number, since it uses less digits than its factorization.

1312715172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109392938 (or 109392936 counting only the distinct ones).

The product of its digits is 2940, while the sum is 30.

The square root of 1312715172 is about 36231.4113995025. The cubic root of 1312715172 is about 1094.9396134419.

The spelling of 1312715172 in words is "one billion, three hundred twelve million, seven hundred fifteen thousand, one hundred seventy-two".