315899791 has 2 divisors, whose sum is σ = 315899792. Its totient is φ = 315899790.

The previous prime is 315899761. The next prime is 315899809. The reversal of 315899791 is 197998513.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315899791 - 2⁹ = 315899279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315899741) 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, 157949895 + 157949896.

It is an arithmetic number, because the mean of its divisors is an integer number (157949896).

Almost surely, 2^315899791 is an apocalyptic number.

315899791 is a deficient number, since it is larger than the sum of its proper divisors (1).

315899791 is an equidigital number, since it uses as much as digits as its factorization.

315899791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 52.

The square root of 315899791 is about 17773.5700128027. The cubic root of 315899791 is about 681.0564539987.

The spelling of 315899791 in words is "three hundred fifteen million, eight hundred ninety-nine thousand, seven hundred ninety-one".