313253440 has 28 divisors (see below), whose sum is σ = 745935516. Its totient is φ = 125301248.

The previous prime is 313253411. The next prime is 313253471. The reversal of 313253440 is 44352313.

It can be written as a sum of positive squares in 2 ways, for example, as 131974144 + 181279296 = 11488^2 + 13464^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489139 + ... + 489778.

Almost surely, 2^313253440 is an apocalyptic number.

It is an amenable number.

313253440 is an abundant number, since it is smaller than the sum of its proper divisors (432682076).

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

313253440 is an equidigital number, since it uses as much as digits as its factorization.

313253440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978934 (or 978924 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 313253440 is about 17698.9672015064. The cubic root of 313253440 is about 679.1493399839.

The spelling of 313253440 in words is "three hundred thirteen million, two hundred fifty-three thousand, four hundred forty".