317561085953 has 2 divisors, whose sum is σ = 317561085954. Its totient is φ = 317561085952.

The previous prime is 317561085911. The next prime is 317561085991. The reversal of 317561085953 is 359580165713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230153346049 + 87407739904 = 479743^2 + 295648^2 .

It is a cyclic number.

It is not a de Polignac number, because 317561085953 - 2⁶ = 317561085889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 317561085895 and 317561085904.

It is not a weakly prime, because it can be changed into another prime (317561285953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158780542976 + 158780542977.

It is an arithmetic number, because the mean of its divisors is an integer number (158780542977).

Almost surely, 2^317561085953 is an apocalyptic number.

It is an amenable number.

317561085953 is a deficient number, since it is larger than the sum of its proper divisors (1).

317561085953 is an equidigital number, since it uses as much as digits as its factorization.

317561085953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402000, while the sum is 53.

The spelling of 317561085953 in words is "three hundred seventeen billion, five hundred sixty-one million, eighty-five thousand, nine hundred fifty-three".