22319 has 4 divisors (see below), whose sum is σ = 24360. Its totient is φ = 20280.

The previous prime is 22307. The next prime is 22343. The reversal of 22319 is 91322.

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

It is a cyclic number.

It is not a de Polignac number, because 22319 - 2⁴ = 22303 is a prime.

It is a super-3 number, since 3×22319³ = 33353810063277, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22297 and 22306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22349) 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, 1004 + ... + 1025.

It is an arithmetic number, because the mean of its divisors is an integer number (6090).

2²²³¹⁹ is an apocalyptic number.

22319 is a deficient number, since it is larger than the sum of its proper divisors (2041).

22319 is a wasteful number, since it uses less digits than its factorization.

22319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040.

The product of its digits is 108, while the sum is 17.

The square root of 22319 is about 149.3954483912. The cubic root of 22319 is about 28.1551758426.

It can be divided in two parts, 223 and 19, that added together give a palindrome (242).

The spelling of 22319 in words is "twenty-two thousand, three hundred nineteen".