317705923889 has 2 divisors, whose sum is σ = 317705923890. Its totient is φ = 317705923888.

The previous prime is 317705923849. The next prime is 317705923939. The reversal of 317705923889 is 988329507713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317059086400 + 646837489 = 563080^2 + 25433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317705923889 is a prime.

It is a super-3 number, since 3×317705923889³ (a number of 35 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (317705923849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158852961944 + 158852961945.

It is an arithmetic number, because the mean of its divisors is an integer number (158852961945).

Almost surely, 2^317705923889 is an apocalyptic number.

It is an amenable number.

317705923889 is a deficient number, since it is larger than the sum of its proper divisors (1).

317705923889 is an equidigital number, since it uses as much as digits as its factorization.

317705923889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 317705923889 in words is "three hundred seventeen billion, seven hundred five million, nine hundred twenty-three thousand, eight hundred eighty-nine".