111393912 has 128 divisors (see below), whose sum is σ = 334172160. Its totient is φ = 30274560.

The previous prime is 111393851. The next prime is 111393917. The reversal of 111393912 is 219393111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111393912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111393917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380038 + ... + 380330.

It is an arithmetic number, because the mean of its divisors is an integer number (2610720).

Almost surely, 2^111393912 is an apocalyptic number.

111393912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111393912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167086080).

111393912 is an abundant number, since it is smaller than the sum of its proper divisors (222778248).

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

111393912 is a wasteful number, since it uses less digits than its factorization.

111393912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 409 counting only the distinct ones).

The product of its digits is 1458, while the sum is 30.

The square root of 111393912 is about 10554.3314331131. The cubic root of 111393912 is about 481.1573806806.

It can be divided in two parts, 11139 and 3912, that added together give a palindrome (15051).

The spelling of 111393912 in words is "one hundred eleven million, three hundred ninety-three thousand, nine hundred twelve".