1312307963 has 2 divisors, whose sum is σ = 1312307964. Its totient is φ = 1312307962.

The previous prime is 1312307929. The next prime is 1312307989. The reversal of 1312307963 is 3697032131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312307963 - 2²⁸ = 1043872507 is a prime.

It is a super-3 number, since 3×1312307963³ (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1312307923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656153981 + 656153982.

It is an arithmetic number, because the mean of its divisors is an integer number (656153982).

Almost surely, 2^1312307963 is an apocalyptic number.

1312307963 is the 19364-th centered heptagonal number.

1312307963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312307963 is an equidigital number, since it uses as much as digits as its factorization.

1312307963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 1312307963 is about 36225.7914061239. The cubic root of 1312307963 is about 1094.8263836552.

The spelling of 1312307963 in words is "one billion, three hundred twelve million, three hundred seven thousand, nine hundred sixty-three".