131112112 has 20 divisors (see below), whose sum is σ = 257092920. Its totient is φ = 64765568.

The previous prime is 131112097. The next prime is 131112131. The reversal of 131112112 is 211211131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131112092 and 131112101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48037 + ... + 50692.

It is an arithmetic number, because the mean of its divisors is an integer number (12854646).

Almost surely, 2^131112112 is an apocalyptic number.

It is an amenable number.

131112112 is a deficient number, since it is larger than the sum of its proper divisors (125980808).

131112112 is an equidigital number, since it uses as much as digits as its factorization.

131112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98820 (or 98814 counting only the distinct ones).

The product of its digits is 12, while the sum is 13.

The square root of 131112112 is about 11450.4197302981. The cubic root of 131112112 is about 508.0201492411.

Adding to 131112112 its reverse (211211131), we get a palindrome (342323243).

The spelling of 131112112 in words is "one hundred thirty-one million, one hundred twelve thousand, one hundred twelve".