22431133 has 2 divisors, whose sum is σ = 22431134. Its totient is φ = 22431132.

The previous prime is 22431127. The next prime is 22431163. The reversal of 22431133 is 33113422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19201924 + 3229209 = 4382^2 + 1797^2 .

It is a cyclic number.

It is not a de Polignac number, because 22431133 - 2²¹ = 20333981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22431133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22431113) 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, 11215566 + 11215567.

It is an arithmetic number, because the mean of its divisors is an integer number (11215567).

Almost surely, 2^22431133 is an apocalyptic number.

It is an amenable number.

22431133 is a deficient number, since it is larger than the sum of its proper divisors (1).

22431133 is an equidigital number, since it uses as much as digits as its factorization.

22431133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 19.

The square root of 22431133 is about 4736.1517078742. The cubic root of 22431133 is about 282.0224861770.

Adding to 22431133 its reverse (33113422), we get a palindrome (55544555).

The spelling of 22431133 in words is "twenty-two million, four hundred thirty-one thousand, one hundred thirty-three".