309316 has 12 divisors (see below), whose sum is σ = 618688. Its totient is φ = 132552.

The previous prime is 309313. The next prime is 309317. The reversal of 309316 is 613903.

309316 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

309316 is an admirable number.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (309311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5496 + ... + 5551.

2³⁰⁹³¹⁶ is an apocalyptic number.

It is an amenable number.

309316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

309316 is a wasteful number, since it uses less digits than its factorization.

309316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11058 (or 11056 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 309316 is about 556.1618469475. The cubic root of 309316 is about 67.6291810572.

It can be divided in two parts, 309 and 316, that added together give a 4-th power (625 = 5⁴).

The spelling of 309316 in words is "three hundred nine thousand, three hundred sixteen".