31224444132 has 24 divisors (see below), whose sum is σ = 83265184576. Its totient is φ = 8921269728.

The previous prime is 31224444107. The next prime is 31224444151. The reversal of 31224444132 is 23144442213.

It is a super-2 number, since 2×31224444132² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 31224444132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185859703 + ... + 185859870.

Almost surely, 2^31224444132 is an apocalyptic number.

It is an amenable number.

31224444132 is an abundant number, since it is smaller than the sum of its proper divisors (52040740444).

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

31224444132 is a wasteful number, since it uses less digits than its factorization.

31224444132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371719587 (or 371719585 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

Adding to 31224444132 its reverse (23144442213), we get a palindrome (54368886345).

The spelling of 31224444132 in words is "thirty-one billion, two hundred twenty-four million, four hundred forty-four thousand, one hundred thirty-two".