31132423112 has 64 divisors (see below), whose sum is σ = 67920474240. Its totient is φ = 13101580800.

The previous prime is 31132423079. The next prime is 31132423121. The reversal of 31132423112 is 21132423113.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2100287 + ... + 2115057.

It is an arithmetic number, because the mean of its divisors is an integer number (1061257410).

Almost surely, 2^31132423112 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 31132423112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33960237120).

31132423112 is an abundant number, since it is smaller than the sum of its proper divisors (36788051128).

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

31132423112 is a wasteful number, since it uses less digits than its factorization.

31132423112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15462 (or 15458 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 31132423112 its reverse (21132423113), we get a palindrome (52264846225).

Subtracting from 31132423112 its reverse (21132423113), we obtain a palindrome (9999999999).

The spelling of 31132423112 in words is "thirty-one billion, one hundred thirty-two million, four hundred twenty-three thousand, one hundred twelve".