22949231 has 2 divisors, whose sum is σ = 22949232. Its totient is φ = 22949230.

The previous prime is 22949219. The next prime is 22949233. The reversal of 22949231 is 13294922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22949231 is a prime.

It is a super-2 number, since 2×22949231² = 1053334406982722, which contains 22 as substring.

Together with 22949233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22949233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11474615 + 11474616.

It is an arithmetic number, because the mean of its divisors is an integer number (11474616).

Almost surely, 2^22949231 is an apocalyptic number.

22949231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22949231 is an equidigital number, since it uses as much as digits as its factorization.

22949231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 22949231 is about 4790.5355650491. The cubic root of 22949231 is about 284.1772970494.

The spelling of 22949231 in words is "twenty-two million, nine hundred forty-nine thousand, two hundred thirty-one".