22424231 has 2 divisors, whose sum is σ = 22424232. Its totient is φ = 22424230.

The previous prime is 22424219. The next prime is 22424239. The reversal of 22424231 is 13242422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22424231 - 2⁶ = 22424167 is a prime.

It is a super-2 number, since 2×22424231² = 1005692271882722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22424239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11212115 + 11212116.

It is an arithmetic number, because the mean of its divisors is an integer number (11212116).

Almost surely, 2^22424231 is an apocalyptic number.

22424231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22424231 is an equidigital number, since it uses as much as digits as its factorization.

22424231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22424231 is about 4735.4230011690. The cubic root of 22424231 is about 281.9935573533.

Adding to 22424231 its reverse (13242422), we get a palindrome (35666653).

The spelling of 22424231 in words is "twenty-two million, four hundred twenty-four thousand, two hundred thirty-one".