317361857 has 2 divisors, whose sum is σ = 317361858. Its totient is φ = 317361856.

The previous prime is 317361851. The next prime is 317361859. The reversal of 317361857 is 758163713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167935681 + 149426176 = 12959^2 + 12224^2 .

It is an emirp because it is prime and its reverse (758163713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317361857 - 2¹⁴ = 317345473 is a prime.

Together with 317361859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (317361851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158680928 + 158680929.

It is an arithmetic number, because the mean of its divisors is an integer number (158680929).

Almost surely, 2^317361857 is an apocalyptic number.

It is an amenable number.

317361857 is a deficient number, since it is larger than the sum of its proper divisors (1).

317361857 is an equidigital number, since it uses as much as digits as its factorization.

317361857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 317361857 is about 17814.6528734073. The cubic root of 317361857 is about 682.1055390315.

The spelling of 317361857 in words is "three hundred seventeen million, three hundred sixty-one thousand, eight hundred fifty-seven".