22244231 has 8 divisors (see below), whose sum is σ = 23567280. Its totient is φ = 20936448.

The previous prime is 22244227. The next prime is 22244251. The reversal of 22244231 is 13244222.

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 22244231 - 2² = 22244227 is a prime.

It is a super-2 number, since 2×22244231² = 989611625562722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22244221) 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, 746 + ... + 6711.

It is an arithmetic number, because the mean of its divisors is an integer number (2945910).

Almost surely, 2^22244231 is an apocalyptic number.

22244231 is a deficient number, since it is larger than the sum of its proper divisors (1323049).

22244231 is a wasteful number, since it uses less digits than its factorization.

22244231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7633.

The product of its digits is 768, while the sum is 20.

The square root of 22244231 is about 4716.3790136078. The cubic root of 22244231 is about 281.2370057536.

Adding to 22244231 its reverse (13244222), we get a palindrome (35488453).

Subtracting from 22244231 its reverse (13244222), we obtain a palindrome (9000009).

The spelling of 22244231 in words is "twenty-two million, two hundred forty-four thousand, two hundred thirty-one".