31103020323112 has 16 divisors (see below), whose sum is σ = 58330043025300. Its totient is φ = 15548342183040.

The previous prime is 31103020322999. The next prime is 31103020323119. The reversal of 31103020323112 is 21132302030113.

It can be written as a sum of positive squares in 2 ways, for example, as 31102192840356 + 827482756 = 5576934^2 + 28766^2 .

It is not an unprimeable number, because it can be changed into a prime (31103020323119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395955589 + ... + 396034132.

Almost surely, 2^{31103020323112} is an apocalyptic number.

It is an amenable number.

31103020323112 is a deficient number, since it is larger than the sum of its proper divisors (27227022702188).

31103020323112 is a wasteful number, since it uses less digits than its factorization.

31103020323112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791994636 (or 791994632 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31103020323112 its reverse (21132302030113), we get a palindrome (52235322353225).

The spelling of 31103020323112 in words is "thirty-one trillion, one hundred three billion, twenty million, three hundred twenty-three thousand, one hundred twelve".