309913712 has 20 divisors (see below), whose sum is σ = 632061480. Its totient is φ = 146801088.

The previous prime is 309913699. The next prime is 309913729. The reversal of 309913712 is 217319903.

309913712 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509423 + ... + 510030.

It is an arithmetic number, because the mean of its divisors is an integer number (31603074).

Almost surely, 2^309913712 is an apocalyptic number.

It is an amenable number.

309913712 is an abundant number, since it is smaller than the sum of its proper divisors (322147768).

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

309913712 is a wasteful number, since it uses less digits than its factorization.

309913712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019480 (or 1019474 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 309913712 is about 17604.3662765804. The cubic root of 309913712 is about 676.7271449203.

The spelling of 309913712 in words is "three hundred nine million, nine hundred thirteen thousand, seven hundred twelve".