319723 has 4 divisors (see below), whose sum is σ = 333648. Its totient is φ = 305800.

The previous prime is 319699. The next prime is 319727. The reversal of 319723 is 327913.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327913 = 17 ⋅19289.

It is a cyclic number.

It is not a de Polignac number, because 319723 - 2⁵ = 319691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319727) 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, 6928 + ... + 6973.

It is an arithmetic number, because the mean of its divisors is an integer number (83412).

2³¹⁹⁷²³ is an apocalyptic number.

319723 is a deficient number, since it is larger than the sum of its proper divisors (13925).

319723 is a wasteful number, since it uses less digits than its factorization.

319723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13924.

The product of its digits is 1134, while the sum is 25.

The square root of 319723 is about 565.4405362193. The cubic root of 319723 is about 68.3792961973.

The spelling of 319723 in words is "three hundred nineteen thousand, seven hundred twenty-three".