22531401232 has 10 divisors (see below), whose sum is σ = 43654589918. Its totient is φ = 11265700608.

The previous prime is 22531401229. The next prime is 22531401241. The reversal of 22531401232 is 23210413522.

It can be written as a sum of positive squares in only one way, i.e., 22456820736 + 74580496 = 149856^2 + 8636^2 .

It is a super-2 number, since 2×22531401232² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22531401197 and 22531401206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704106273 + ... + 704106304.

Almost surely, 2^22531401232 is an apocalyptic number.

It is an amenable number.

22531401232 is a deficient number, since it is larger than the sum of its proper divisors (21123188686).

22531401232 is a wasteful number, since it uses less digits than its factorization.

22531401232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408212585 (or 1408212579 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 22531401232 its reverse (23210413522), we get a palindrome (45741814754).

The spelling of 22531401232 in words is "twenty-two billion, five hundred thirty-one million, four hundred one thousand, two hundred thirty-two".