22123604531 has 8 divisors (see below), whose sum is σ = 25529597184. Its totient is φ = 18778981320.

The previous prime is 22123604521. The next prime is 22123604567. The reversal of 22123604531 is 13540632122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22123604531 - 2¹⁴ = 22123588147 is a prime.

It is a super-2 number, since 2×22123604531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22123604494 and 22123604503.

It is not an unprimeable number, because it can be changed into a prime (22123604521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15341585 + ... + 15343026.

It is an arithmetic number, because the mean of its divisors is an integer number (3191199648).

Almost surely, 2^22123604531 is an apocalyptic number.

22123604531 is a deficient number, since it is larger than the sum of its proper divisors (3405992653).

22123604531 is a wasteful number, since it uses less digits than its factorization.

22123604531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30684721.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 22123604531 in words is "twenty-two billion, one hundred twenty-three million, six hundred four thousand, five hundred thirty-one".