317155361 has 2 divisors, whose sum is σ = 317155362. Its totient is φ = 317155360.

The previous prime is 317155351. The next prime is 317155373. The reversal of 317155361 is 163551713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306915361 + 10240000 = 17519^2 + 3200^2 .

It is a cyclic number.

It is not a de Polignac number, because 317155361 - 2¹⁸ = 316893217 is a prime.

It is a super-2 number, since 2×317155361² = 201175046022080642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (317155301) 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, 158577680 + 158577681.

It is an arithmetic number, because the mean of its divisors is an integer number (158577681).

Almost surely, 2^317155361 is an apocalyptic number.

It is an amenable number.

317155361 is a deficient number, since it is larger than the sum of its proper divisors (1).

317155361 is an equidigital number, since it uses as much as digits as its factorization.

317155361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 32.

The square root of 317155361 is about 17808.8562518765. The cubic root of 317155361 is about 681.9575663809.

The spelling of 317155361 in words is "three hundred seventeen million, one hundred fifty-five thousand, three hundred sixty-one".