1312307999 has 2 divisors, whose sum is σ = 1312308000. Its totient is φ = 1312307998.

The previous prime is 1312307989. The next prime is 1312308001. The reversal of 1312307999 is 9997032131.

It is a strong prime.

It is an emirp because it is prime and its reverse (9997032131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312307999 - 2²⁴ = 1295530783 is a prime.

It is a Sophie Germain prime.

Together with 1312308001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312307929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656153999 + 656154000.

It is an arithmetic number, because the mean of its divisors is an integer number (656154000).

Almost surely, 2^1312307999 is an apocalyptic number.

1312307999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312307999 is an equidigital number, since it uses as much as digits as its factorization.

1312307999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 1312307999 is about 36225.7919030074. The cubic root of 1312307999 is about 1094.8263936665.

The spelling of 1312307999 in words is "one billion, three hundred twelve million, three hundred seven thousand, nine hundred ninety-nine".