309907504048 has 20 divisors (see below), whose sum is σ = 600511859920. Its totient is φ = 154936701504.

The previous prime is 309907504031. The next prime is 309907504063. The reversal of 309907504048 is 840405709903.

It is a super-2 number, since 2×309907504048² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 309907503992 and 309907504010.

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, 915063 + ... + 1207126.

It is an arithmetic number, because the mean of its divisors is an integer number (30025592996).

Almost surely, 2^309907504048 is an apocalyptic number.

It is an amenable number.

309907504048 is a deficient number, since it is larger than the sum of its proper divisors (290604355872).

309907504048 is a wasteful number, since it uses less digits than its factorization.

309907504048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131324 (or 2131318 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 309907504048 in words is "three hundred nine billion, nine hundred seven million, five hundred four thousand, forty-eight".