320319 has 6 divisors (see below), whose sum is σ = 462696. Its totient is φ = 213540.

The previous prime is 320317. The next prime is 320329. The reversal of 320319 is 913023.

It is not a de Polignac number, because 320319 - 2¹ = 320317 is a prime.

It is a super-2 number, since 2×320319² = 205208523522, which contains 22 as substring.

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 320319.

It is not an unprimeable number, because it can be changed into a prime (320317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17787 + ... + 17804.

It is an arithmetic number, because the mean of its divisors is an integer number (77116).

2³²⁰³¹⁹ is an apocalyptic number.

320319 is a deficient number, since it is larger than the sum of its proper divisors (142377).

320319 is a wasteful number, since it uses less digits than its factorization.

320319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35597 (or 35594 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 320319 is about 565.9673135438. The cubic root of 320319 is about 68.4217587491.

Subtracting 320319 from its reverse (913023), we obtain a cube (592704 = 84³).

The spelling of 320319 in words is "three hundred twenty thousand, three hundred nineteen".