31320133112 has 32 divisors (see below), whose sum is σ = 59410130400. Its totient is φ = 15477580800.

The previous prime is 31320133057. The next prime is 31320133123. The reversal of 31320133112 is 21133102313.

It is a congruent number.

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, 1979312 + ... + 1995072.

It is an arithmetic number, because the mean of its divisors is an integer number (1856566575).

Almost surely, 2^31320133112 is an apocalyptic number.

It is an amenable number.

31320133112 is a deficient number, since it is larger than the sum of its proper divisors (28089997288).

31320133112 is a wasteful number, since it uses less digits than its factorization.

31320133112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18647 (or 18643 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31320133112 its reverse (21133102313), we get a palindrome (52453235425).

The spelling of 31320133112 in words is "thirty-one billion, three hundred twenty million, one hundred thirty-three thousand, one hundred twelve".