31233012312112 has 80 divisors (see below), whose sum is σ = 65909703071520. Its totient is φ = 14251410302976.

The previous prime is 31233012312097. The next prime is 31233012312119. The reversal of 31233012312112 is 21121321033213.

It is not an unprimeable number, because it can be changed into a prime (31233012312119) 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, 147305118 + ... + 147516994.

It is an arithmetic number, because the mean of its divisors is an integer number (823871288394).

Almost surely, 2^{31233012312112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31233012312112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32954851535760).

31233012312112 is an abundant number, since it is smaller than the sum of its proper divisors (34676690759408).

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

31233012312112 is a wasteful number, since it uses less digits than its factorization.

31233012312112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219950 (or 219944 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31233012312112 its reverse (21121321033213), we get a palindrome (52354333345325).

The spelling of 31233012312112 in words is "thirty-one trillion, two hundred thirty-three billion, twelve million, three hundred twelve thousand, one hundred twelve".