316505899 has 2 divisors, whose sum is σ = 316505900. Its totient is φ = 316505898.

The previous prime is 316505887. The next prime is 316505947. The reversal of 316505899 is 998505613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 316505899 - 2⁵ = 316505867 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (316505699) 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 as a sum of consecutive naturals, namely, 158252949 + 158252950.

It is an arithmetic number, because the mean of its divisors is an integer number (158252950).

Almost surely, 2^316505899 is an apocalyptic number.

316505899 is a deficient number, since it is larger than the sum of its proper divisors (1).

316505899 is an equidigital number, since it uses as much as digits as its factorization.

316505899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 316505899 is about 17790.6126651108. The cubic root of 316505899 is about 681.4917503097.

The spelling of 316505899 in words is "three hundred sixteen million, five hundred five thousand, eight hundred ninety-nine".