316231 has 6 divisors (see below), whose sum is σ = 329696. Its totient is φ = 303000.

The previous prime is 316223. The next prime is 316241. The reversal of 316231 is 132613.

It is not a de Polignac number, because 316231 - 2³ = 316223 is a prime.

It is a super-2 number, since 2×316231² = 200004090722, which contains 22 as substring.

It is a Duffinian number.

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 316231.

It is not an unprimeable number, because it can be changed into a prime (316201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3081 + ... + 3181.

2³¹⁶²³¹ is an apocalyptic number.

316231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

316231 is a deficient number, since it is larger than the sum of its proper divisors (13465).

316231 is an equidigital number, since it uses as much as digits as its factorization.

316231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 132 counting only the distinct ones).

The product of its digits is 108, while the sum is 16.

The square root of 316231 is about 562.3442006458. The cubic root of 316231 is about 68.1294391519.

Adding to 316231 its reverse (132613), we get a palindrome (448844).

The spelling of 316231 in words is "three hundred sixteen thousand, two hundred thirty-one".