318313720394940 has 144 divisors (see below), whose sum is σ = 946805145247584. Its totient is φ = 79889272320000.

The previous prime is 318313720394933. The next prime is 318313720394959. The reversal of 318313720394940 is 49493027313813.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1753694190 + ... + 1753875690.

It is an arithmetic number, because the mean of its divisors is an integer number (6575035730886).

Almost surely, 2^{318313720394940} is an apocalyptic number.

318313720394940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

318313720394940 is an abundant number, since it is smaller than the sum of its proper divisors (628491424852644).

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

318313720394940 is a wasteful number, since it uses less digits than its factorization.

318313720394940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282688 (or 282669 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 57.

The spelling of 318313720394940 in words is "three hundred eighteen trillion, three hundred thirteen billion, seven hundred twenty million, three hundred ninety-four thousand, nine hundred forty".