22431563 has 12 divisors (see below), whose sum is σ = 28466712. Its totient is φ = 17478720.

The previous prime is 22431559. The next prime is 22431593. The reversal of 22431563 is 36513422.

It is not a de Polignac number, because 22431563 - 2² = 22431559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22431593) 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 in 11 ways as a sum of consecutive naturals, for example, 20270 + ... + 21347.

It is an arithmetic number, because the mean of its divisors is an integer number (2372226).

Almost surely, 2^22431563 is an apocalyptic number.

22431563 is a deficient number, since it is larger than the sum of its proper divisors (6035149).

22431563 is a wasteful number, since it uses less digits than its factorization.

22431563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41642 (or 41635 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 22431563 is about 4736.1971031620. The cubic root of 22431563 is about 282.0242882690.

Adding to 22431563 its reverse (36513422), we get a palindrome (58944985).

The spelling of 22431563 in words is "twenty-two million, four hundred thirty-one thousand, five hundred sixty-three".