31331332122012 has 72 divisors (see below), whose sum is σ = 88231912335840. Its totient is φ = 9307981952640.

The previous prime is 31331332122007. The next prime is 31331332122019. The reversal of 31331332122012 is 21022123313313.

31331332122012 is a `hidden beast` number, since 3 + 1 + 3 + 313 + 321 + 2 + 20 + 1 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31331332122019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1154250064 + ... + 1154277207.

Almost surely, 2^{31331332122012} is an apocalyptic number.

It is an amenable number.

31331332122012 is an abundant number, since it is smaller than the sum of its proper divisors (56900580213828).

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

31331332122012 is a wasteful number, since it uses less digits than its factorization.

31331332122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308527323 (or 2308527318 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 31331332122012 its reverse (21022123313313), we get a palindrome (52353455435325).

The spelling of 31331332122012 in words is "thirty-one trillion, three hundred thirty-one billion, three hundred thirty-two million, one hundred twenty-two thousand, twelve".