313304513218 has 24 divisors (see below), whose sum is σ = 496052622828. Its totient is φ = 148389608448.

The previous prime is 313304513173. The next prime is 313304513219. The reversal of 313304513218 is 812315403313.

It can be written as a sum of positive squares in 2 ways, for example, as 310698104409 + 2606408809 = 557403^2 + 51053^2 .

It is not an unprimeable number, because it can be changed into a prime (313304513219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7511830 + ... + 7553422.

Almost surely, 2^313304513218 is an apocalyptic number.

313304513218 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

313304513218 is a deficient number, since it is larger than the sum of its proper divisors (182748109610).

313304513218 is a wasteful number, since it uses less digits than its factorization.

313304513218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52066 (or 52047 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 313304513218 in words is "three hundred thirteen billion, three hundred four million, five hundred thirteen thousand, two hundred eighteen".