111423816 has 64 divisors (see below), whose sum is σ = 353731200. Its totient is φ = 31834944.

The previous prime is 111423811. The next prime is 111423821. The reversal of 111423816 is 618324111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111423811) and next prime (111423821).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 111423816.

It is not an unprimeable number, because it can be changed into a prime (111423811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35335 + ... + 38358.

It is an arithmetic number, because the mean of its divisors is an integer number (5527050).

Almost surely, 2^111423816 is an apocalyptic number.

It is an amenable number.

111423816 is an abundant number, since it is smaller than the sum of its proper divisors (242307384).

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

111423816 is a wasteful number, since it uses less digits than its factorization.

111423816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73715 (or 73705 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 111423816 is about 10555.7480076023. The cubic root of 111423816 is about 481.2004328327.

Adding to 111423816 its reverse (618324111), we get a palindrome (729747927).

The spelling of 111423816 in words is "one hundred eleven million, four hundred twenty-three thousand, eight hundred sixteen".