317457839 has 2 divisors, whose sum is σ = 317457840. Its totient is φ = 317457838.

The previous prime is 317457781. The next prime is 317457841. The reversal of 317457839 is 938754713.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 317457839 - 2¹⁶ = 317392303 is a prime.

It is a Sophie Germain prime.

Together with 317457841, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 317457793 and 317457802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317417839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158728919 + 158728920.

It is an arithmetic number, because the mean of its divisors is an integer number (158728920).

Almost surely, 2^317457839 is an apocalyptic number.

317457839 is a deficient number, since it is larger than the sum of its proper divisors (1).

317457839 is an equidigital number, since it uses as much as digits as its factorization.

317457839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 47.

The square root of 317457839 is about 17817.3465757390. The cubic root of 317457839 is about 682.1742967743.

The spelling of 317457839 in words is "three hundred seventeen million, four hundred fifty-seven thousand, eight hundred thirty-nine".