317231 has 4 divisors (see below), whose sum is σ = 328200. Its totient is φ = 306264.

The previous prime is 317227. The next prime is 317257. The reversal of 317231 is 132713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132713 = 7 ⋅18959.

It is a cyclic number.

It is not a de Polignac number, because 317231 - 2² = 317227 is a prime.

It is a super-2 number, since 2×317231² = 201271014722, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 317231.

It is not an unprimeable number, because it can be changed into a prime (317431) 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, 5441 + ... + 5498.

It is an arithmetic number, because the mean of its divisors is an integer number (82050).

2³¹⁷²³¹ is an apocalyptic number.

317231 is a deficient number, since it is larger than the sum of its proper divisors (10969).

317231 is a wasteful number, since it uses less digits than its factorization.

317231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10968.

The product of its digits is 126, while the sum is 17.

The square root of 317231 is about 563.2326339977. The cubic root of 317231 is about 68.2011775868.

Adding to 317231 its reverse (132713), we get a palindrome (449944).

The spelling of 317231 in words is "three hundred seventeen thousand, two hundred thirty-one".