309040316 has 12 divisors (see below), whose sum is σ = 582422232. Its totient is φ = 142633968.

The previous prime is 309040267. The next prime is 309040321. The reversal of 309040316 is 613040903.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

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, 2971490 + ... + 2971593.

It is an arithmetic number, because the mean of its divisors is an integer number (48535186).

Almost surely, 2^309040316 is an apocalyptic number.

It is an amenable number.

309040316 is a deficient number, since it is larger than the sum of its proper divisors (273381916).

309040316 is a wasteful number, since it uses less digits than its factorization.

309040316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5943100 (or 5943098 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 309040316 is about 17579.5425423985. The cubic root of 309040316 is about 676.0908313694.

The spelling of 309040316 in words is "three hundred nine million, forty thousand, three hundred sixteen".