313656636 has 96 divisors (see below), whose sum is σ = 802816000. Its totient is φ = 94944960.

The previous prime is 313656631. The next prime is 313656649. The reversal of 313656636 is 636656313.

It is a junction number, because it is equal to n+sod(n) for n = 313656594 and 313656603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313656631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1406421 + ... + 1406643.

Almost surely, 2^313656636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313656636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401408000).

313656636 is an abundant number, since it is smaller than the sum of its proper divisors (489159364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313656636 is a wasteful number, since it uses less digits than its factorization.

313656636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 477 counting only the distinct ones).

The product of its digits is 174960, while the sum is 39.

The square root of 313656636 is about 17710.3539208001. The cubic root of 313656636 is about 679.4405981813.

The spelling of 313656636 in words is "three hundred thirteen million, six hundred fifty-six thousand, six hundred thirty-six".