111112312 has 8 divisors (see below), whose sum is σ = 208335600. Its totient is φ = 55556152.

The previous prime is 111112307. The next prime is 111112319. The reversal of 111112312 is 213211111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 111112292 and 111112301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6944512 + ... + 6944527.

It is an arithmetic number, because the mean of its divisors is an integer number (26041950).

Almost surely, 2^111112312 is an apocalyptic number.

It is an amenable number.

111112312 is a deficient number, since it is larger than the sum of its proper divisors (97223288).

111112312 is a wasteful number, since it uses less digits than its factorization.

111112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13889045 (or 13889041 counting only the distinct ones).

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

The square root of 111112312 is about 10540.9824969023. The cubic root of 111112312 is about 480.7515887444.

Adding to 111112312 its reverse (213211111), we get a palindrome (324323423).

The spelling of 111112312 in words is "one hundred eleven million, one hundred twelve thousand, three hundred twelve".