317457479 has 2 divisors, whose sum is σ = 317457480. Its totient is φ = 317457478.

The previous prime is 317457449. The next prime is 317457493. The reversal of 317457479 is 974754713.

It is a strong prime.

It is an emirp because it is prime and its reverse (974754713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317457479 - 2²⁰ = 316408903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317457449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158728739 + 158728740.

It is an arithmetic number, because the mean of its divisors is an integer number (158728740).

Almost surely, 2^317457479 is an apocalyptic number.

317457479 is a deficient number, since it is larger than the sum of its proper divisors (1).

317457479 is an equidigital number, since it uses as much as digits as its factorization.

317457479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 740880, while the sum is 47.

The square root of 317457479 is about 17817.3364732218. The cubic root of 317457479 is about 682.1740389103.

The spelling of 317457479 in words is "three hundred seventeen million, four hundred fifty-seven thousand, four hundred seventy-nine".