1312536699 has 12 divisors (see below), whose sum is σ = 1978316496. Its totient is φ = 836979792.

The previous prime is 1312536671. The next prime is 1312536707. The reversal of 1312536699 is 9966352131.

1312536699 is a `hidden beast` number, since 13 + 12 + 536 + 6 + 99 = 666.

It is not a de Polignac number, because 1312536699 - 2⁸ = 1312536443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312536619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3170172 + ... + 3170585.

It is an arithmetic number, because the mean of its divisors is an integer number (164859708).

Almost surely, 2^1312536699 is an apocalyptic number.

1312536699 is a deficient number, since it is larger than the sum of its proper divisors (665779797).

1312536699 is a wasteful number, since it uses less digits than its factorization.

1312536699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340786 (or 6340783 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 1312536699 is about 36228.9483562524. The cubic root of 1312536699 is about 1094.8899895736.

The spelling of 1312536699 in words is "one billion, three hundred twelve million, five hundred thirty-six thousand, six hundred ninety-nine".