111323988 has 36 divisors (see below), whose sum is σ = 283439520. Its totient is φ = 36839376.

The previous prime is 111323987. The next prime is 111324001. The reversal of 111323988 is 889323111.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111323987) 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 11 ways as a sum of consecutive naturals, for example, 6120 + ... + 16127.

It is an arithmetic number, because the mean of its divisors is an integer number (7873320).

Almost surely, 2^111323988 is an apocalyptic number.

111323988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

111323988 is an abundant number, since it is smaller than the sum of its proper divisors (172115532).

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

111323988 is a wasteful number, since it uses less digits than its factorization.

111323988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22396 (or 22391 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 111323988 is about 10551.0183394779. The cubic root of 111323988 is about 481.0566825057.

The spelling of 111323988 in words is "one hundred eleven million, three hundred twenty-three thousand, nine hundred eighty-eight".