12311112 has 32 divisors (see below), whose sum is σ = 33576480. Its totient is φ = 3730560.

The previous prime is 12311093. The next prime is 12311113. The reversal of 12311112 is 21111321.

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 not an unprimeable number, because it can be changed into a prime (12311113) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23053 + ... + 23580.

It is an arithmetic number, because the mean of its divisors is an integer number (1049265).

Almost surely, 2^12311112 is an apocalyptic number.

12311112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12311112 is an abundant number, since it is smaller than the sum of its proper divisors (21265368).

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

12311112 is a wasteful number, since it uses less digits than its factorization.

12311112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46653 (or 46649 counting only the distinct ones).

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

The square root of 12311112 is about 3508.7194245194. The cubic root of 12311112 is about 230.9045162990.

Adding to 12311112 its reverse (21111321), we get a palindrome (33422433).

The spelling of 12311112 in words is "twelve million, three hundred eleven thousand, one hundred twelve".