31023321103112 has 256 divisors, whose sum is σ = 67815014400000. Its totient is φ = 13185841084416.

The previous prime is 31023321103039. The next prime is 31023321103139. The reversal of 31023321103112 is 21130112332013.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3320483513 + ... + 3320492855.

It is an arithmetic number, because the mean of its divisors is an integer number (264902400000).

Almost surely, 2^{31023321103112} 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 31023321103112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33907507200000).

31023321103112 is an abundant number, since it is smaller than the sum of its proper divisors (36791693296888).

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

31023321103112 is a wasteful number, since it uses less digits than its factorization.

31023321103112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9788 (or 9784 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31023321103112 its reverse (21130112332013), we get a palindrome (52153433435125).

The spelling of 31023321103112 in words is "thirty-one trillion, twenty-three billion, three hundred twenty-one million, one hundred three thousand, one hundred twelve".