31013121233332 has 48 divisors (see below), whose sum is σ = 62293754073600. Its totient is φ = 13234057224192.

The previous prime is 31013121233299. The next prime is 31013121233333. The reversal of 31013121233332 is 23333212131013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 31013121233332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013121233333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16243794 + ... + 18052342.

It is an arithmetic number, because the mean of its divisors is an integer number (1297786543200).

Almost surely, 2^{31013121233332} is an apocalyptic number.

It is an amenable number.

31013121233332 is an abundant number, since it is smaller than the sum of its proper divisors (31280632840268).

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

31013121233332 is a wasteful number, since it uses less digits than its factorization.

31013121233332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811200 (or 1811198 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 31013121233332 its reverse (23333212131013), we get a palindrome (54346333364345).

The spelling of 31013121233332 in words is "thirty-one trillion, thirteen billion, one hundred twenty-one million, two hundred thirty-three thousand, three hundred thirty-two".