22104431 has 2 divisors, whose sum is σ = 22104432. Its totient is φ = 22104430.

The previous prime is 22104427. The next prime is 22104461. The reversal of 22104431 is 13440122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22104431 - 2² = 22104427 is a prime.

It is a super-2 number, since 2×22104431² = 977211739667522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22104461) 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, 11052215 + 11052216.

It is an arithmetic number, because the mean of its divisors is an integer number (11052216).

Almost surely, 2^22104431 is an apocalyptic number.

22104431 is a deficient number, since it is larger than the sum of its proper divisors (1).

22104431 is an equidigital number, since it uses as much as digits as its factorization.

22104431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22104431 is about 4701.5349621161. The cubic root of 22104431 is about 280.6465966683.

Adding to 22104431 its reverse (13440122), we get a palindrome (35544553).

The spelling of 22104431 in words is "twenty-two million, one hundred four thousand, four hundred thirty-one".