317291 has 4 divisors (see below), whose sum is σ = 341712. Its totient is φ = 292872.

The previous prime is 317279. The next prime is 317321. The reversal of 317291 is 192713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192713 = 103 ⋅1871.

It is a cyclic number.

It is not a de Polignac number, because 317291 - 2⁶ = 317227 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 317291.

It is not an unprimeable number, because it can be changed into a prime (317491) 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, 12191 + ... + 12216.

It is an arithmetic number, because the mean of its divisors is an integer number (85428).

2³¹⁷²⁹¹ is an apocalyptic number.

317291 is a deficient number, since it is larger than the sum of its proper divisors (24421).

317291 is a wasteful number, since it uses less digits than its factorization.

317291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24420.

The product of its digits is 378, while the sum is 23.

The square root of 317291 is about 563.2858954385. The cubic root of 317291 is about 68.2054770959.

The spelling of 317291 in words is "three hundred seventeen thousand, two hundred ninety-one".