317923169 has 2 divisors, whose sum is σ = 317923170. Its totient is φ = 317923168.

The previous prime is 317923139. The next prime is 317923213. The reversal of 317923169 is 961329713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203433169 + 114490000 = 14263^2 + 10700^2 .

It is a cyclic number.

It is not a de Polignac number, because 317923169 - 2¹² = 317919073 is a prime.

It is a super-2 number, since 2×317923169² = 202150282774005122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (317923139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158961584 + 158961585.

It is an arithmetic number, because the mean of its divisors is an integer number (158961585).

Almost surely, 2^317923169 is an apocalyptic number.

It is an amenable number.

317923169 is a deficient number, since it is larger than the sum of its proper divisors (1).

317923169 is an equidigital number, since it uses as much as digits as its factorization.

317923169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 41.

The square root of 317923169 is about 17830.4001357233. The cubic root of 317923169 is about 682.5074446271.

The spelling of 317923169 in words is "three hundred seventeen million, nine hundred twenty-three thousand, one hundred sixty-nine".