31233132231012 has 72 divisors (see below), whose sum is σ = 79910344506720. Its totient is φ = 10284487678080.

The previous prime is 31233132231011. The next prime is 31233132231023. The reversal of 31233132231012 is 21013223133213.

31233132231012 is a `hidden beast` number, since 3 + 1 + 2 + 3 + 313 + 22 + 310 + 12 = 666.

It is not an unprimeable number, because it can be changed into a prime (31233132231011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27046539 + ... + 28177677.

Almost surely, 2^{31233132231012} is an apocalyptic number.

It is an amenable number.

31233132231012 is an abundant number, since it is smaller than the sum of its proper divisors (48677212275708).

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

31233132231012 is a wasteful number, since it uses less digits than its factorization.

31233132231012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140473 (or 1140468 counting only the distinct ones).

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

Adding to 31233132231012 its reverse (21013223133213), we get a palindrome (52246355364225).

The spelling of 31233132231012 in words is "thirty-one trillion, two hundred thirty-three billion, one hundred thirty-two million, two hundred thirty-one thousand, twelve".