22636231 has 8 divisors (see below), whose sum is σ = 24741504. Its totient is φ = 20616960.

The previous prime is 22636219. The next prime is 22636241. The reversal of 22636231 is 13263622.

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 22636231 - 2⁵ = 22636199 is a prime.

It is a super-2 number, since 2×22636231² = 1024797907770722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22636196 and 22636205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22636241) 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, 20950 + ... + 22003.

It is an arithmetic number, because the mean of its divisors is an integer number (3092688).

Almost surely, 2^22636231 is an apocalyptic number.

22636231 is a deficient number, since it is larger than the sum of its proper divisors (2105273).

22636231 is a wasteful number, since it uses less digits than its factorization.

22636231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43001.

The product of its digits is 2592, while the sum is 25.

The square root of 22636231 is about 4757.7548276472. The cubic root of 22636231 is about 282.8794327156.

Adding to 22636231 its reverse (13263622), we get a palindrome (35899853).

The spelling of 22636231 in words is "twenty-two million, six hundred thirty-six thousand, two hundred thirty-one".