31112133132 has 24 divisors (see below), whose sum is σ = 73678486336. Its totient is φ = 10215924048.

The previous prime is 31112133127. The next prime is 31112133161. The reversal of 31112133132 is 23133121113.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 31112133099 and 31112133108.

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, 19347538 + ... + 19349145.

Almost surely, 2^31112133132 is an apocalyptic number.

It is an amenable number.

31112133132 is an abundant number, since it is smaller than the sum of its proper divisors (42566353204).

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

31112133132 is a wasteful number, since it uses less digits than its factorization.

31112133132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38696757 (or 38696755 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

Adding to 31112133132 its reverse (23133121113), we get a palindrome (54245254245).

The spelling of 31112133132 in words is "thirty-one billion, one hundred twelve million, one hundred thirty-three thousand, one hundred thirty-two".