313231 has 4 divisors (see below), whose sum is σ = 318600. Its totient is φ = 307864.

The previous prime is 313219. The next prime is 313241. The reversal of 313231 is 132313.

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 313231 - 2¹¹ = 311183 is a prime.

It is a super-2 number, since 2×313231² = 196227318722, which contains 22 as substring.

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 313231.

It is not an unprimeable number, because it can be changed into a prime (313211) 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, 2596 + ... + 2713.

It is an arithmetic number, because the mean of its divisors is an integer number (79650).

2³¹³²³¹ is an apocalyptic number.

313231 is a deficient number, since it is larger than the sum of its proper divisors (5369).

313231 is an equidigital number, since it uses as much as digits as its factorization.

313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368.

The product of its digits is 54, while the sum is 13.

The square root of 313231 is about 559.6704387405. The cubic root of 313231 is about 67.9133122577.

Adding to 313231 its reverse (132313), we get a palindrome (445544).

It can be divided in two parts, 3 and 13231, that multiplied together give a palindrome (39693).

The spelling of 313231 in words is "three hundred thirteen thousand, two hundred thirty-one".