313561240 has 32 divisors (see below), whose sum is σ = 713448000. Its totient is φ = 124013824.

The previous prime is 313561219. The next prime is 313561271. The reversal of 313561240 is 42165313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40480 + ... + 47599.

It is an arithmetic number, because the mean of its divisors is an integer number (22295250).

Almost surely, 2^313561240 is an apocalyptic number.

It is an amenable number.

313561240 is an abundant number, since it is smaller than the sum of its proper divisors (399886760).

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

313561240 is a wasteful number, since it uses less digits than its factorization.

313561240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88179 (or 88175 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 313561240 is about 17707.6604891781. The cubic root of 313561240 is about 679.3717091691.

The spelling of 313561240 in words is "three hundred thirteen million, five hundred sixty-one thousand, two hundred forty".