316517999 has 16 divisors (see below), whose sum is σ = 374203200. Its totient is φ = 267563520.

The previous prime is 316517989. The next prime is 316518061. The reversal of 316517999 is 999715613.

It is not a de Polignac number, because 316517999 - 2¹⁶ = 316452463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316517989) 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 in 15 ways as a sum of consecutive naturals, for example, 18719 + ... + 31359.

It is an arithmetic number, because the mean of its divisors is an integer number (23387700).

Almost surely, 2^316517999 is an apocalyptic number.

316517999 is a deficient number, since it is larger than the sum of its proper divisors (57685201).

316517999 is an equidigital number, since it uses as much as digits as its factorization.

316517999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12735 (or 12721 counting only the distinct ones).

The product of its digits is 459270, while the sum is 50.

The square root of 316517999 is about 17790.9527288451. The cubic root of 316517999 is about 681.5004346609.

The spelling of 316517999 in words is "three hundred sixteen million, five hundred seventeen thousand, nine hundred ninety-nine".