1312977384 has 32 divisors (see below), whose sum is σ = 3647160000. Its totient is φ = 437659056.

The previous prime is 1312977377. The next prime is 1312977401. The reversal of 1312977384 is 4837792131.

It is a super-2 number, since 2×1312977384² = 3447819221790966912, which contains 22 as substring.

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, 3039084 + ... + 3039515.

It is an arithmetic number, because the mean of its divisors is an integer number (113973750).

Almost surely, 2^1312977384 is an apocalyptic number.

It is an amenable number.

1312977384 is an abundant number, since it is smaller than the sum of its proper divisors (2334182616).

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

1312977384 is a wasteful number, since it uses less digits than its factorization.

1312977384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6078614 (or 6078604 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 1312977384 is about 36235.0297916257. The cubic root of 1312977384 is about 1095.0125125236.

The spelling of 1312977384 in words is "one billion, three hundred twelve million, nine hundred seventy-seven thousand, three hundred eighty-four".