1313439172 has 24 divisors (see below), whose sum is σ = 2376523800. Its totient is φ = 634671360.

The previous prime is 1313439161. The next prime is 1313439181. The reversal of 1313439172 is 2719343131.

It can be written as a sum of positive squares in 4 ways, for example, as 642318336 + 671120836 = 25344^2 + 25906^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7729 + ... + 51832.

It is an arithmetic number, because the mean of its divisors is an integer number (99021825).

Almost surely, 2^1313439172 is an apocalyptic number.

It is an amenable number.

1313439172 is a deficient number, since it is larger than the sum of its proper divisors (1063084628).

1313439172 is a wasteful number, since it uses less digits than its factorization.

1313439172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59751 (or 59749 counting only the distinct ones).

The product of its digits is 13608, while the sum is 34.

The square root of 1313439172 is about 36241.4013525967. The cubic root of 1313439172 is about 1095.1408732944.

The spelling of 1313439172 in words is "one billion, three hundred thirteen million, four hundred thirty-nine thousand, one hundred seventy-two".