318795317 has 2 divisors, whose sum is σ = 318795318. Its totient is φ = 318795316.

The previous prime is 318795299. The next prime is 318795391. The reversal of 318795317 is 713597813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304362916 + 14432401 = 17446^2 + 3799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318795317 is a prime.

It is a super-2 number, since 2×318795317² = 203260908282260978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318795017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159397658 + 159397659.

It is an arithmetic number, because the mean of its divisors is an integer number (159397659).

Almost surely, 2^318795317 is an apocalyptic number.

It is an amenable number.

318795317 is a deficient number, since it is larger than the sum of its proper divisors (1).

318795317 is an equidigital number, since it uses as much as digits as its factorization.

318795317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 44.

The square root of 318795317 is about 17854.8401561033. The cubic root of 318795317 is about 683.1309747557.

The spelling of 318795317 in words is "three hundred eighteen million, seven hundred ninety-five thousand, three hundred seventeen".