1312529536 has 16 divisors (see below), whose sum is σ = 2614805190. Its totient is φ = 656264704.

The previous prime is 1312529521. The next prime is 1312529551. The reversal of 1312529536 is 6359252131.

It is an interprime number because it is at equal distance from previous prime (1312529521) and next prime (1312529551).

It can be written as a sum of positive squares in only one way, i.e., 795240000 + 517289536 = 28200^2 + 22744^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1312529495 and 1312529504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5126941 + ... + 5127196.

Almost surely, 2^1312529536 is an apocalyptic number.

1312529536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1312529536 is a deficient number, since it is larger than the sum of its proper divisors (1302275654).

1312529536 is an equidigital number, since it uses as much as digits as its factorization.

1312529536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10254151 (or 10254139 counting only the distinct ones).

The product of its digits is 48600, while the sum is 37.

The square root of 1312529536 is about 36228.8494987075. The cubic root of 1312529536 is about 1094.8879978296.

The spelling of 1312529536 in words is "one billion, three hundred twelve million, five hundred twenty-nine thousand, five hundred thirty-six".