313957540 has 24 divisors (see below), whose sum is σ = 710027640. Its totient is φ = 115922688.

The previous prime is 313957507. The next prime is 313957549. The reversal of 313957540 is 45759313.

It can be written as a sum of positive squares in 4 ways, for example, as 16257024 + 297700516 = 4032^2 + 17254^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 313957540.

It is not an unprimeable number, because it can be changed into a prime (313957549) 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, 603505 + ... + 604024.

It is an arithmetic number, because the mean of its divisors is an integer number (29584485).

Almost surely, 2^313957540 is an apocalyptic number.

It is an amenable number.

313957540 is an abundant number, since it is smaller than the sum of its proper divisors (396070100).

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

313957540 is a wasteful number, since it uses less digits than its factorization.

313957540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207551 (or 1207549 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 313957540 is about 17718.8470279530. The cubic root of 313957540 is about 679.6578007175.

The spelling of 313957540 in words is "three hundred thirteen million, nine hundred fifty-seven thousand, five hundred forty".