31312031013112 has 64 divisors (see below), whose sum is σ = 63241271746560. Its totient is φ = 14491697299200.

The previous prime is 31312031013103. The next prime is 31312031013119. The reversal of 31312031013112 is 21131013021313.

It is a super-2 number, since 2×31312031013112² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312031013119) 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, 177779812 + ... + 177955852.

It is an arithmetic number, because the mean of its divisors is an integer number (988144871040).

Almost surely, 2^{31312031013112} is an apocalyptic number.

It is an amenable number.

31312031013112 is an abundant number, since it is smaller than the sum of its proper divisors (31929240733448).

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

31312031013112 is a wasteful number, since it uses less digits than its factorization.

31312031013112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207284 (or 207280 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31312031013112 its reverse (21131013021313), we get a palindrome (52443044034425).

The spelling of 31312031013112 in words is "thirty-one trillion, three hundred twelve billion, thirty-one million, thirteen thousand, one hundred twelve".