111304021423 has 4 divisors (see below), whose sum is σ = 127204595920. Its totient is φ = 95403446928.

The previous prime is 111304021373. The next prime is 111304021457. The reversal of 111304021423 is 324120403111.

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 111304021423 - 2²⁹ = 110767150511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111304021394 and 111304021403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111304021523) 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, 7950287238 + ... + 7950287251.

It is an arithmetic number, because the mean of its divisors is an integer number (31801148980).

Almost surely, 2^111304021423 is an apocalyptic number.

111304021423 is a deficient number, since it is larger than the sum of its proper divisors (15900574497).

111304021423 is an equidigital number, since it uses as much as digits as its factorization.

111304021423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15900574496.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 111304021423 its reverse (324120403111), we get a palindrome (435424424534).

The spelling of 111304021423 in words is "one hundred eleven billion, three hundred four million, twenty-one thousand, four hundred twenty-three".