318009 has 8 divisors (see below), whose sum is σ = 430272. Its totient is φ = 208880.

The previous prime is 318007. The next prime is 318023. The reversal of 318009 is 900813.

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

It is a cyclic number.

It is not a de Polignac number, because 318009 - 2¹ = 318007 is a prime.

It is a super-2 number, since 2×318009² = 202259448162, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 318009.

It is not an unprimeable number, because it can be changed into a prime (318001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534 + ... + 959.

It is an arithmetic number, because the mean of its divisors is an integer number (53784).

2³¹⁸⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

318009 is a deficient number, since it is larger than the sum of its proper divisors (112263).

318009 is a wasteful number, since it uses less digits than its factorization.

318009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 318009 is about 563.9228670661. The cubic root of 318009 is about 68.2568858863.

The spelling of 318009 in words is "three hundred eighteen thousand, nine".