22931189 has 2 divisors, whose sum is σ = 22931190. Its totient is φ = 22931188.

The previous prime is 22931149. The next prime is 22931221. The reversal of 22931189 is 98113922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21996100 + 935089 = 4690^2 + 967^2 .

It is a cyclic number.

It is not a de Polignac number, because 22931189 - 2⁸ = 22930933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22931149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11465594 + 11465595.

It is an arithmetic number, because the mean of its divisors is an integer number (11465595).

Almost surely, 2^22931189 is an apocalyptic number.

It is an amenable number.

22931189 is a deficient number, since it is larger than the sum of its proper divisors (1).

22931189 is an equidigital number, since it uses as much as digits as its factorization.

22931189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 22931189 is about 4788.6521068042. The cubic root of 22931189 is about 284.1028069575.

The spelling of 22931189 in words is "twenty-two million, nine hundred thirty-one thousand, one hundred eighty-nine".