317998169 has 2 divisors, whose sum is σ = 317998170. Its totient is φ = 317998168.

The previous prime is 317998151. The next prime is 317998181. The reversal of 317998169 is 961899713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197262025 + 120736144 = 14045^2 + 10988^2 .

It is a cyclic number.

It is not a de Polignac number, because 317998169 - 2¹⁶ = 317932633 is a prime.

It is a super-2 number, since 2×317998169² = 202245670974705122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 317998169.

It is not a weakly prime, because it can be changed into another prime (317998139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158999084 + 158999085.

It is an arithmetic number, because the mean of its divisors is an integer number (158999085).

Almost surely, 2^317998169 is an apocalyptic number.

It is an amenable number.

317998169 is a deficient number, since it is larger than the sum of its proper divisors (1).

317998169 is an equidigital number, since it uses as much as digits as its factorization.

317998169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 53.

The square root of 317998169 is about 17832.5031613624. The cubic root of 317998169 is about 682.5611096199.

The spelling of 317998169 in words is "three hundred seventeen million, nine hundred ninety-eight thousand, one hundred sixty-nine".