22312131232 has 24 divisors (see below), whose sum is σ = 43933186836. Its totient is φ = 11154496512.

The previous prime is 22312131227. The next prime is 22312131269. The reversal of 22312131232 is 23213121322.

It can be written as a sum of positive squares in 2 ways, for example, as 19299877776 + 3012253456 = 138924^2 + 54884^2 .

It is a super-3 number, since 3×22312131232³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 201768 + ... + 292120.

Almost surely, 2^22312131232 is an apocalyptic number.

It is an amenable number.

22312131232 is a deficient number, since it is larger than the sum of its proper divisors (21621055604).

22312131232 is an equidigital number, since it uses as much as digits as its factorization.

22312131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98080 (or 98072 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

Adding to 22312131232 its reverse (23213121322), we get a palindrome (45525252554).

The spelling of 22312131232 in words is "twenty-two billion, three hundred twelve million, one hundred thirty-one thousand, two hundred thirty-two".