317606257 has 4 divisors (see below), whose sum is σ = 336288996. Its totient is φ = 298923520.

The previous prime is 317606249. The next prime is 317606269. The reversal of 317606257 is 752606713.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 280931121 + 36675136 = 16761^2 + 6056^2 .

It is a cyclic number.

It is not a de Polignac number, because 317606257 - 2³ = 317606249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317606207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9341344 + ... + 9341377.

It is an arithmetic number, because the mean of its divisors is an integer number (84072249).

Almost surely, 2^317606257 is an apocalyptic number.

It is an amenable number.

317606257 is a deficient number, since it is larger than the sum of its proper divisors (18682739).

317606257 is a wasteful number, since it uses less digits than its factorization.

317606257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18682738.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 317606257 is about 17821.5110751025. The cubic root of 317606257 is about 682.2805903332.

The spelling of 317606257 in words is "three hundred seventeen million, six hundred six thousand, two hundred fifty-seven".