111423012320 has 48 divisors (see below), whose sum is σ = 271728390528. Its totient is φ = 43131486720.

The previous prime is 111423012319. The next prime is 111423012359. The reversal of 111423012320 is 23210324111.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 111423012292 and 111423012301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11227199 + ... + 11237118.

It is an arithmetic number, because the mean of its divisors is an integer number (5661008136).

Almost surely, 2^111423012320 is an apocalyptic number.

111423012320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111423012320 is an abundant number, since it is smaller than the sum of its proper divisors (160305378208).

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

111423012320 is a wasteful number, since it uses less digits than its factorization.

111423012320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22464363 (or 22464355 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 111423012320 its reverse (23210324111), we get a palindrome (134633336431).

The spelling of 111423012320 in words is "one hundred eleven billion, four hundred twenty-three million, twelve thousand, three hundred twenty".