1312407996 has 12 divisors (see below), whose sum is σ = 3062285352. Its totient is φ = 437469328.

The previous prime is 1312407989. The next prime is 1312408063. The reversal of 1312407996 is 6997042131.

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

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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, 54683655 + ... + 54683678.

It is an arithmetic number, because the mean of its divisors is an integer number (255190446).

Almost surely, 2^1312407996 is an apocalyptic number.

It is an amenable number.

1312407996 is an abundant number, since it is smaller than the sum of its proper divisors (1749877356).

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

1312407996 is a wasteful number, since it uses less digits than its factorization.

1312407996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109367340 (or 109367338 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 1312407996 is about 36227.1720673861. The cubic root of 1312407996 is about 1094.8542013088.

The spelling of 1312407996 in words is "one billion, three hundred twelve million, four hundred seven thousand, nine hundred ninety-six".