1312287712 has 24 divisors (see below), whose sum is σ = 2618962416. Its totient is φ = 647154432.

The previous prime is 1312287709. The next prime is 1312287721. The reversal of 1312287712 is 2177822131.

It is a congruent number.

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, 278548 + ... + 283219.

It is an arithmetic number, because the mean of its divisors is an integer number (109123434).

Almost surely, 2^1312287712 is an apocalyptic number.

It is an amenable number.

1312287712 is a deficient number, since it is larger than the sum of its proper divisors (1306674704).

1312287712 is an equidigital number, since it uses as much as digits as its factorization.

1312287712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561850 (or 561842 counting only the distinct ones).

The product of its digits is 9408, while the sum is 34.

The square root of 1312287712 is about 36225.5118942438. The cubic root of 1312287712 is about 1094.8207519885.

The spelling of 1312287712 in words is "one billion, three hundred twelve million, two hundred eighty-seven thousand, seven hundred twelve".