319009 has 4 divisors (see below), whose sum is σ = 321300. Its totient is φ = 316720.

The previous prime is 319001. The next prime is 319027. The reversal of 319009 is 900913.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 180625 + 138384 = 425^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 319009 - 2³ = 319001 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319001) 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, 922 + ... + 1219.

It is an arithmetic number, because the mean of its divisors is an integer number (80325).

2³¹⁹⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

319009 is a deficient number, since it is larger than the sum of its proper divisors (2291).

319009 is a wasteful number, since it uses less digits than its factorization.

319009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 319009 is about 564.8088172116. The cubic root of 319009 is about 68.3283570968.

The spelling of 319009 in words is "three hundred nineteen thousand, nine".