22233231 has 32 divisors (see below), whose sum is σ = 34467840. Its totient is φ = 14148000.

The previous prime is 22233217. The next prime is 22233257. The reversal of 22233231 is 13233222.

It is a happy number.

It is not a de Polignac number, because 22233231 - 2⁵ = 22233199 is a prime.

It is a super-2 number, since 2×22233231² = 988633121398722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22235231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84406 + ... + 84668.

It is an arithmetic number, because the mean of its divisors is an integer number (1077120).

Almost surely, 2^22233231 is an apocalyptic number.

22233231 is a deficient number, since it is larger than the sum of its proper divisors (12234609).

22233231 is a wasteful number, since it uses less digits than its factorization.

22233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 398 counting only the distinct ones).

The product of its digits is 432, while the sum is 18.

The square root of 22233231 is about 4715.2127205461. The cubic root of 22233231 is about 281.1906399169.

Adding to 22233231 its reverse (13233222), we get a palindrome (35466453).

Subtracting from 22233231 its reverse (13233222), we obtain a palindrome (9000009).

The spelling of 22233231 in words is "twenty-two million, two hundred thirty-three thousand, two hundred thirty-one".