317326531 has 2 divisors, whose sum is σ = 317326532. Its totient is φ = 317326530.

The previous prime is 317326523. The next prime is 317326609. The reversal of 317326531 is 135623713.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 317326531 - 2³ = 317326523 is a prime.

It is a super-2 number, since 2×317326531² = 201392254552987922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 317326493 and 317326502.

It is not a weakly prime, because it can be changed into another prime (317326501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158663265 + 158663266.

It is an arithmetic number, because the mean of its divisors is an integer number (158663266).

Almost surely, 2^317326531 is an apocalyptic number.

317326531 is a deficient number, since it is larger than the sum of its proper divisors (1).

317326531 is an equidigital number, since it uses as much as digits as its factorization.

317326531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 31.

The square root of 317326531 is about 17813.6613586315. The cubic root of 317326531 is about 682.0802293796.

The spelling of 317326531 in words is "three hundred seventeen million, three hundred twenty-six thousand, five hundred thirty-one".