31200013332 has 36 divisors (see below), whose sum is σ = 79044769440. Its totient is φ = 10376522832.

The previous prime is 31200013321. The next prime is 31200013349. The reversal of 31200013332 is 23331000213.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

31200013332 is a modest number, since divided by 13332 gives 312 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 962232 + ... + 994127.

It is an arithmetic number, because the mean of its divisors is an integer number (2195688040).

Almost surely, 2^31200013332 is an apocalyptic number.

It is an amenable number.

31200013332 is an abundant number, since it is smaller than the sum of its proper divisors (47844756108).

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

31200013332 is a wasteful number, since it uses less digits than its factorization.

31200013332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956812 (or 1956807 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31200013332 its reverse (23331000213), we get a palindrome (54531013545).

The spelling of 31200013332 in words is "thirty-one billion, two hundred million, thirteen thousand, three hundred thirty-two".