319945 has 8 divisors (see below), whose sum is σ = 390600. Its totient is φ = 251520.

The previous prime is 319937. The next prime is 319967. The reversal of 319945 is 549913.

It can be written as a sum of positive squares in 4 ways, for example, as 20736 + 299209 = 144^2 + 547^2 .

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

It is not a de Polignac number, because 319945 - 2³ = 319937 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220 + ... + 829.

It is an arithmetic number, because the mean of its divisors is an integer number (48825).

2³¹⁹⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

319945 is a deficient number, since it is larger than the sum of its proper divisors (70655).

319945 is a wasteful number, since it uses less digits than its factorization.

319945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115.

The product of its digits is 4860, while the sum is 31.

The square root of 319945 is about 565.6368092690. The cubic root of 319945 is about 68.3951189477.

The spelling of 319945 in words is "three hundred nineteen thousand, nine hundred forty-five".