316909 has 4 divisors (see below), whose sum is σ = 318240. Its totient is φ = 315580.

The previous prime is 316907. The next prime is 316919. The reversal of 316909 is 909613.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 316909 - 2¹ = 316907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199 + ... + 820.

It is an arithmetic number, because the mean of its divisors is an integer number (79560).

2³¹⁶⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

316909 is a deficient number, since it is larger than the sum of its proper divisors (1331).

316909 is a wasteful number, since it uses less digits than its factorization.

316909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 316909 is about 562.9467115101. The cubic root of 316909 is about 68.1780942882.

Subtracting 316909 from its reverse (909613), we obtain a cube (592704 = 84³).

It can be divided in two parts, 316 and 909, that added together give a triangular number (1225 = T₄₉).

The spelling of 316909 in words is "three hundred sixteen thousand, nine hundred nine".