1312971584 has 28 divisors (see below), whose sum is σ = 2606986404. Its totient is φ = 656093184.

The previous prime is 1312971581. The next prime is 1312971631. The reversal of 1312971584 is 4851792131.

It can be written as a sum of positive squares in 2 ways, for example, as 134560000 + 1178411584 = 11600^2 + 34328^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312971581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122672 + ... + 132944.

Almost surely, 2^1312971584 is an apocalyptic number.

It is an amenable number.

1312971584 is a deficient number, since it is larger than the sum of its proper divisors (1294014820).

1312971584 is a wasteful number, since it uses less digits than its factorization.

1312971584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12282 (or 12272 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 1312971584 is about 36234.9497584859. The cubic root of 1312971584 is about 1095.0109001368.

The spelling of 1312971584 in words is "one billion, three hundred twelve million, nine hundred seventy-one thousand, five hundred eighty-four".