31212031131332 has 12 divisors (see below), whose sum is σ = 54621116531856. Its totient is φ = 15605997836520.

The previous prime is 31212031131319. The next prime is 31212031131341. The reversal of 31212031131332 is 23313113021213.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27407 + ... + 7900937.

It is an arithmetic number, because the mean of its divisors is an integer number (4551759710988).

Almost surely, 2^{31212031131332} is an apocalyptic number.

It is an amenable number.

31212031131332 is a deficient number, since it is larger than the sum of its proper divisors (23409085400524).

31212031131332 is a wasteful number, since it uses less digits than its factorization.

31212031131332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8864578 (or 8864576 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31212031131332 its reverse (23313113021213), we get a palindrome (54525144152545).

The spelling of 31212031131332 in words is "thirty-one trillion, two hundred twelve billion, thirty-one million, one hundred thirty-one thousand, three hundred thirty-two".