22139313 has 16 divisors (see below), whose sum is σ = 35512320. Its totient is φ = 11984976.

The previous prime is 22139311. The next prime is 22139323. The reversal of 22139313 is 31393122.

It is not a de Polignac number, because 22139313 - 2¹ = 22139311 is a prime.

It is a super-2 number, since 2×22139313² = 980298360223938, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22139311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27345 + ... + 28142.

It is an arithmetic number, because the mean of its divisors is an integer number (2219520).

Almost surely, 2^22139313 is an apocalyptic number.

It is an amenable number.

22139313 is a deficient number, since it is larger than the sum of its proper divisors (13373007).

22139313 is a wasteful number, since it uses less digits than its factorization.

22139313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55516.

The product of its digits is 972, while the sum is 24.

The square root of 22139313 is about 4705.2431393075. The cubic root of 22139313 is about 280.7941443045.

The spelling of 22139313 in words is "twenty-two million, one hundred thirty-nine thousand, three hundred thirteen".