313000631 has 4 divisors (see below), whose sum is σ = 313071264. Its totient is φ = 312930000.

The previous prime is 313000613. The next prime is 313000637. The reversal of 313000631 is 136000313.

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 313000631 - 2¹⁸ = 312738487 is a prime.

It is a super-2 number, since 2×313000631² = 195938790012796322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313000637) 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, 28190 + ... + 37691.

It is an arithmetic number, because the mean of its divisors is an integer number (78267816).

Almost surely, 2^313000631 is an apocalyptic number.

313000631 is a deficient number, since it is larger than the sum of its proper divisors (70633).

313000631 is an equidigital number, since it uses as much as digits as its factorization.

313000631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70632.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 313000631 is about 17691.8238460595. The cubic root of 313000631 is about 678.9665899029.

Adding to 313000631 its reverse (136000313), we get a palindrome (449000944).

The spelling of 313000631 in words is "three hundred thirteen million, six hundred thirty-one", and thus it is an aban number.