313812840 has 64 divisors (see below), whose sum is σ = 1027028160. Its totient is φ = 76075520.

The previous prime is 313812833. The next prime is 313812847. The reversal of 313812840 is 48218313.

It is an interprime number because it is at equal distance from previous prime (313812833) and next prime (313812847).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 313812798 and 313812807.

It is not an unprimeable number, because it can be changed into a prime (313812847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117549 + ... + 120188.

It is an arithmetic number, because the mean of its divisors is an integer number (16047315).

Almost surely, 2^313812840 is an apocalyptic number.

313812840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313812840 is an abundant number, since it is smaller than the sum of its proper divisors (713215320).

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

313812840 is a wasteful number, since it uses less digits than its factorization.

313812840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237762 (or 237758 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 313812840 is about 17714.7633345749. The cubic root of 313812840 is about 679.5533687651.

The spelling of 313812840 in words is "three hundred thirteen million, eight hundred twelve thousand, eight hundred forty".