313655631 has 8 divisors (see below), whose sum is σ = 427933440. Its totient is φ = 204240792.

The previous prime is 313655603. The next prime is 313655633. The reversal of 313655631 is 136556313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 313655631 - 2⁵ = 313655599 is a prime.

It is a super-2 number, since 2×313655631² = 196759709716016322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313655592 and 313655601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313655633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1215591 + ... + 1215848.

It is an arithmetic number, because the mean of its divisors is an integer number (53491680).

Almost surely, 2^313655631 is an apocalyptic number.

313655631 is a deficient number, since it is larger than the sum of its proper divisors (114277809).

313655631 is a wasteful number, since it uses less digits than its factorization.

313655631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431485.

The product of its digits is 24300, while the sum is 33.

The square root of 313655631 is about 17710.3255475443. The cubic root of 313655631 is about 679.4398725061.

The spelling of 313655631 in words is "three hundred thirteen million, six hundred fifty-five thousand, six hundred thirty-one".