111234399 has 4 divisors (see below), whose sum is σ = 148312536. Its totient is φ = 74156264.

The previous prime is 111234377. The next prime is 111234413. The reversal of 111234399 is 993432111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111234399 - 2⁸ = 111234143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111233399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18539064 + ... + 18539069.

It is an arithmetic number, because the mean of its divisors is an integer number (37078134).

Almost surely, 2^111234399 is an apocalyptic number.

111234399 is a deficient number, since it is larger than the sum of its proper divisors (37078137).

111234399 is an equidigital number, since it uses as much as digits as its factorization.

111234399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37078136.

The product of its digits is 5832, while the sum is 33.

The square root of 111234399 is about 10546.7719706079. The cubic root of 111234399 is about 480.9276029483.

It can be divided in two parts, 1112 and 34399, that added together give a triangular number (35511 = T₂₆₆).

The spelling of 111234399 in words is "one hundred eleven million, two hundred thirty-four thousand, three hundred ninety-nine".