309408228912 has 40 divisors (see below), whose sum is σ = 800174460160. Its totient is φ = 103023835200.

The previous prime is 309408228863. The next prime is 309408228953. The reversal of 309408228912 is 219822804903.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3462964 + ... + 3551187.

It is an arithmetic number, because the mean of its divisors is an integer number (20004361504).

Almost surely, 2^309408228912 is an apocalyptic number.

It is an amenable number.

309408228912 is an abundant number, since it is smaller than the sum of its proper divisors (490766231248).

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

309408228912 is a wasteful number, since it uses less digits than its factorization.

309408228912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7015081 (or 7015075 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 309408228912 in words is "three hundred nine billion, four hundred eight million, two hundred twenty-eight thousand, nine hundred twelve".