22444231 has 4 divisors (see below), whose sum is σ = 23218200. Its totient is φ = 21670264.

The previous prime is 22444229. The next prime is 22444241. The reversal of 22444231 is 13244422.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13244422 = 2 ⋅6622211.

It is a cyclic number.

It is not a de Polignac number, because 22444231 - 2¹ = 22444229 is a prime.

It is a super-2 number, since 2×22444231² = 1007487010362722, 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 (22444211) 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, 386941 + ... + 386998.

It is an arithmetic number, because the mean of its divisors is an integer number (5804550).

Almost surely, 2^22444231 is an apocalyptic number.

22444231 is a deficient number, since it is larger than the sum of its proper divisors (773969).

22444231 is an equidigital number, since it uses as much as digits as its factorization.

22444231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773968.

The product of its digits is 1536, while the sum is 22.

The square root of 22444231 is about 4737.5342742824. The cubic root of 22444231 is about 282.0773684066.

Adding to 22444231 its reverse (13244422), we get a palindrome (35688653).

The spelling of 22444231 in words is "twenty-two million, four hundred forty-four thousand, two hundred thirty-one".