111131112 has 64 divisors (see below), whose sum is σ = 284302080. Its totient is φ = 36191232.

The previous prime is 111131087. The next prime is 111131123. The reversal of 111131112 is 211131111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239793 + ... + 240255.

It is an arithmetic number, because the mean of its divisors is an integer number (4442220).

Almost surely, 2^111131112 is an apocalyptic number.

111131112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111131112 is an abundant number, since it is smaller than the sum of its proper divisors (173170968).

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

111131112 is a wasteful number, since it uses less digits than its factorization.

111131112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 678 counting only the distinct ones).

The product of its digits is 6, while the sum is 12.

The square root of 111131112 is about 10541.8742166656. The cubic root of 111131112 is about 480.7787013119.

Adding to 111131112 its reverse (211131111), we get a palindrome (322262223).

Subtracting 111131112 from its reverse (211131111), we obtain a palindrome (99999999).

It can be divided in two parts, 1111 and 31112, that added together give a palindrome (32223).

The spelling of 111131112 in words is "one hundred eleven million, one hundred thirty-one thousand, one hundred twelve".