309472715708 has 48 divisors (see below), whose sum is σ = 587338970400. Its totient is φ = 141829626624.

The previous prime is 309472715707. The next prime is 309472715723. The reversal of 309472715708 is 807517274903.

It is a self number, because there is not a number n which added to its sum of digits gives 309472715708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309472715707) 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, 42664610 + ... + 42671862.

It is an arithmetic number, because the mean of its divisors is an integer number (12236228550).

Almost surely, 2^309472715708 is an apocalyptic number.

It is an amenable number.

309472715708 is a deficient number, since it is larger than the sum of its proper divisors (277866254692).

309472715708 is a wasteful number, since it uses less digits than its factorization.

309472715708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12926 (or 12924 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 53.

The spelling of 309472715708 in words is "three hundred nine billion, four hundred seventy-two million, seven hundred fifteen thousand, seven hundred eight".