31233222320112 has 80 divisors (see below), whose sum is σ = 90035684088480. Its totient is φ = 10366391351808.

The previous prime is 31233222320063. The next prime is 31233222320117. The reversal of 31233222320112 is 21102322233213.

31233222320112 is a `hidden beast` number, since 3 + 1 + 2 + 3 + 3 + 222 + 320 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233222320117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155047683 + ... + 155248994.

It is an arithmetic number, because the mean of its divisors is an integer number (1125446051106).

Almost surely, 2^{31233222320112} is an apocalyptic number.

It is an amenable number.

31233222320112 is an abundant number, since it is smaller than the sum of its proper divisors (58802461768368).

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

31233222320112 is a wasteful number, since it uses less digits than its factorization.

31233222320112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310296927 (or 310296915 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 31233222320112 its reverse (21102322233213), we get a palindrome (52335544553325).

The spelling of 31233222320112 in words is "thirty-one trillion, two hundred thirty-three billion, two hundred twenty-two million, three hundred twenty thousand, one hundred twelve".