31033122131112 has 96 divisors (see below), whose sum is σ = 79594222911840. Its totient is φ = 10082807641600.

The previous prime is 31033122131101. The next prime is 31033122131119. The reversal of 31033122131112 is 21113122133013.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (31033122131119) 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, 43662778 + ... + 44367830.

It is an arithmetic number, because the mean of its divisors is an integer number (829106488665).

Almost surely, 2^{31033122131112} 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 31033122131112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39797111455920).

31033122131112 is an abundant number, since it is smaller than the sum of its proper divisors (48561100780728).

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

31033122131112 is a wasteful number, since it uses less digits than its factorization.

31033122131112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706235 (or 706190 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 31033122131112 its reverse (21113122133013), we get a palindrome (52146244264125).

The spelling of 31033122131112 in words is "thirty-one trillion, thirty-three billion, one hundred twenty-two million, one hundred thirty-one thousand, one hundred twelve".