22431012 has 12 divisors (see below), whose sum is σ = 52339056. Its totient is φ = 7477000.

The previous prime is 22430987. The next prime is 22431047. The reversal of 22431012 is 21013422.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 22430982 and 22431000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934614 + ... + 934637.

It is an arithmetic number, because the mean of its divisors is an integer number (4361588).

Almost surely, 2^22431012 is an apocalyptic number.

It is an amenable number.

22431012 is an abundant number, since it is smaller than the sum of its proper divisors (29908044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22431012 is a wasteful number, since it uses less digits than its factorization.

22431012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869258 (or 1869256 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 22431012 is about 4736.1389337730. The cubic root of 22431012 is about 282.0219790726.

Adding to 22431012 its reverse (21013422), we get a palindrome (43444434).

The spelling of 22431012 in words is "twenty-two million, four hundred thirty-one thousand, twelve".