1312315112 has 16 divisors (see below), whose sum is σ = 2527093860. Its totient is φ = 638423424.

The previous prime is 1312315093. The next prime is 1312315129. The reversal of 1312315112 is 2115132131.

It can be written as a sum of positive squares in 2 ways, for example, as 1182947236 + 129367876 = 34394^2 + 11374^2 .

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, 2216453 + ... + 2217044.

Almost surely, 2^1312315112 is an apocalyptic number.

It is an amenable number.

1312315112 is a deficient number, since it is larger than the sum of its proper divisors (1214778748).

1312315112 is a wasteful number, since it uses less digits than its factorization.

1312315112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4433540 (or 4433536 counting only the distinct ones).

The product of its digits is 180, while the sum is 20.

The square root of 1312315112 is about 36225.8900787821. The cubic root of 1312315112 is about 1094.8283717302.

Adding to 1312315112 its reverse (2115132131), we get a palindrome (3427447243).

The spelling of 1312315112 in words is "one billion, three hundred twelve million, three hundred fifteen thousand, one hundred twelve".