22156313 has 4 divisors (see below), whose sum is σ = 22176528. Its totient is φ = 22136100.

The previous prime is 22156307. The next prime is 22156333. The reversal of 22156313 is 31365122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22156313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22156333) 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, 8363 + ... + 10688.

It is an arithmetic number, because the mean of its divisors is an integer number (5544132).

Almost surely, 2^22156313 is an apocalyptic number.

It is an amenable number.

22156313 is a deficient number, since it is larger than the sum of its proper divisors (20215).

22156313 is a wasteful number, since it uses less digits than its factorization.

22156313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20214.

The product of its digits is 1080, while the sum is 23.

The square root of 22156313 is about 4707.0492880360. The cubic root of 22156313 is about 280.8659965668.

The spelling of 22156313 in words is "twenty-two million, one hundred fifty-six thousand, three hundred thirteen".