312392999 has 2 divisors, whose sum is σ = 312393000. Its totient is φ = 312392998.

The previous prime is 312392987. The next prime is 312393031. The reversal of 312392999 is 999293213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312392999 - 2¹² = 312388903 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312392929) 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, 156196499 + 156196500.

It is an arithmetic number, because the mean of its divisors is an integer number (156196500).

Almost surely, 2^312392999 is an apocalyptic number.

312392999 is a deficient number, since it is larger than the sum of its proper divisors (1).

312392999 is an equidigital number, since it uses as much as digits as its factorization.

312392999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 236196, while the sum is 47.

The square root of 312392999 is about 17674.6428252454. The cubic root of 312392999 is about 678.5269432006.

The spelling of 312392999 in words is "three hundred twelve million, three hundred ninety-two thousand, nine hundred ninety-nine".