315909 has 12 divisors (see below), whose sum is σ = 497952. Its totient is φ = 191400.

The previous prime is 315907. The next prime is 315937. The reversal of 315909 is 909513.

It is not a de Polignac number, because 315909 - 2¹ = 315907 is a prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315909.

It is not an unprimeable number, because it can be changed into a prime (315907) 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 11 ways as a sum of consecutive naturals, for example, 1497 + ... + 1694.

It is an arithmetic number, because the mean of its divisors is an integer number (41496).

2³¹⁵⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

315909 is a deficient number, since it is larger than the sum of its proper divisors (182043).

315909 is a wasteful number, since it uses less digits than its factorization.

315909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208 (or 3205 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 315909 is about 562.0578262065. The cubic root of 315909 is about 68.1063071907.

The spelling of 315909 in words is "three hundred fifteen thousand, nine hundred nine".