309346 has 8 divisors (see below), whose sum is σ = 467820. Its totient is φ = 153408.

The previous prime is 309317. The next prime is 309359. The reversal of 309346 is 643903.

It can be written as a sum of positive squares in 2 ways, for example, as 297025 + 12321 = 545^2 + 111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 309346.

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, 291 + ... + 838.

2³⁰⁹³⁴⁶ is an apocalyptic number.

309346 is a deficient number, since it is larger than the sum of its proper divisors (158474).

309346 is a wasteful number, since it uses less digits than its factorization.

309346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 309346 is about 556.1888168599. The cubic root of 309346 is about 67.6313673972.

The spelling of 309346 in words is "three hundred nine thousand, three hundred forty-six".