31123422432112 has 40 divisors (see below), whose sum is σ = 63583536643200. Its totient is φ = 14717558411712.

The previous prime is 31123422432107. The next prime is 31123422432173. The reversal of 31123422432112 is 21123422432113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87027412 + ... + 87384307.

It is an arithmetic number, because the mean of its divisors is an integer number (1589588416080).

Almost surely, 2^{31123422432112} is an apocalyptic number.

It is an amenable number.

31123422432112 is an abundant number, since it is smaller than the sum of its proper divisors (32460114211088).

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

31123422432112 is a wasteful number, since it uses less digits than its factorization.

31123422432112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174412333 (or 174412327 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

Adding to 31123422432112 its reverse (21123422432113), we get a palindrome (52246844864225).

Subtracting from 31123422432112 its reverse (21123422432113), we obtain a palindrome (9999999999999).

The spelling of 31123422432112 in words is "thirty-one trillion, one hundred twenty-three billion, four hundred twenty-two million, four hundred thirty-two thousand, one hundred twelve".