317491279 has 4 divisors (see below), whose sum is σ = 362847184. Its totient is φ = 272135376.

The previous prime is 317491267. The next prime is 317491301. The reversal of 317491279 is 972194713.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 317491279 - 2⁵ = 317491247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317491219) 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, 22677942 + ... + 22677955.

It is an arithmetic number, because the mean of its divisors is an integer number (90711796).

Almost surely, 2^317491279 is an apocalyptic number.

317491279 is a deficient number, since it is larger than the sum of its proper divisors (45355905).

317491279 is an equidigital number, since it uses as much as digits as its factorization.

317491279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45355904.

The product of its digits is 95256, while the sum is 43.

The square root of 317491279 is about 17818.2849623638. The cubic root of 317491279 is about 682.1982486242.

The spelling of 317491279 in words is "three hundred seventeen million, four hundred ninety-one thousand, two hundred seventy-nine".