317257147 has 4 divisors (see below), whose sum is σ = 331050960. Its totient is φ = 303463336.

The previous prime is 317257141. The next prime is 317257153. The reversal of 317257147 is 741752713.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741752713 = 13 ⋅57057901.

It is an interprime number because it is at equal distance from previous prime (317257141) and next prime (317257153).

It is a cyclic number.

It is not a de Polignac number, because 317257147 - 2⁷ = 317257019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (317257141) 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, 6896872 + ... + 6896917.

It is an arithmetic number, because the mean of its divisors is an integer number (82762740).

Almost surely, 2^317257147 is an apocalyptic number.

317257147 is a deficient number, since it is larger than the sum of its proper divisors (13793813).

317257147 is a wasteful number, since it uses less digits than its factorization.

317257147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13793812.

The product of its digits is 41160, while the sum is 37.

The square root of 317257147 is about 17811.7137580863. The cubic root of 317257147 is about 682.0305130783.

The spelling of 317257147 in words is "three hundred seventeen million, two hundred fifty-seven thousand, one hundred forty-seven".