317131 has 4 divisors (see below), whose sum is σ = 318472. Its totient is φ = 315792.

The previous prime is 317123. The next prime is 317159. The reversal of 317131 is 131713.

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 317131 - 2³ = 317123 is a prime.

It is a super-2 number, since 2×317131² = 201144142322, which contains 22 as substring.

It is a Duffinian number.

317131 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (317171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210 + ... + 823.

It is an arithmetic number, because the mean of its divisors is an integer number (79618).

2³¹⁷¹³¹ is an apocalyptic number.

317131 is a deficient number, since it is larger than the sum of its proper divisors (1341).

317131 is a wasteful number, since it uses less digits than its factorization.

317131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340.

The product of its digits is 63, while the sum is 16.

The square root of 317131 is about 563.1438537354. The cubic root of 317131 is about 68.1940105334.

Adding to 317131 its reverse (131713), we get a palindrome (448844).

The spelling of 317131 in words is "three hundred seventeen thousand, one hundred thirty-one".