31131413112 has 16 divisors (see below), whose sum is σ = 77828532840. Its totient is φ = 10377137696.

The previous prime is 31131413101. The next prime is 31131413143. The reversal of 31131413112 is 21131413113.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648571083 + ... + 648571130.

Almost surely, 2^31131413112 is an apocalyptic number.

It is an amenable number.

31131413112 is an abundant number, since it is smaller than the sum of its proper divisors (46697119728).

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

31131413112 is a wasteful number, since it uses less digits than its factorization.

31131413112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297142222 (or 1297142218 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

Adding to 31131413112 its reverse (21131413113), we get a palindrome (52262826225).

Subtracting from 31131413112 its reverse (21131413113), we obtain a palindrome (9999999999).

The spelling of 31131413112 in words is "thirty-one billion, one hundred thirty-one million, four hundred thirteen thousand, one hundred twelve".