1311513996 has 24 divisors (see below), whose sum is σ = 3295599664. Its totient is φ = 403542720.

The previous prime is 1311513979. The next prime is 1311514013. The reversal of 1311513996 is 6993151131.

It is an interprime number because it is at equal distance from previous prime (1311513979) and next prime (1311514013).

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 4203415 + ... + 4203726.

Almost surely, 2^1311513996 is an apocalyptic number.

It is an amenable number.

1311513996 is an abundant number, since it is smaller than the sum of its proper divisors (1984085668).

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

1311513996 is a wasteful number, since it uses less digits than its factorization.

1311513996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8407161 (or 8407159 counting only the distinct ones).

The product of its digits is 21870, while the sum is 39.

The square root of 1311513996 is about 36214.8311607275. The cubic root of 1311513996 is about 1094.6055433730.

The spelling of 1311513996 in words is "one billion, three hundred eleven million, five hundred thirteen thousand, nine hundred ninety-six".