111320023123 has 4 divisors (see below), whose sum is σ = 115158644640. Its totient is φ = 107481401608.

The previous prime is 111320023117. The next prime is 111320023151. The reversal of 111320023123 is 321320023111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321320023111 = 43 ⋅7472558677.

It is a cyclic number.

It is not a de Polignac number, because 111320023123 - 2¹³ = 111320014931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111320023123.

It is not an unprimeable number, because it can be changed into a prime (111320023183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1919310715 + ... + 1919310772.

It is an arithmetic number, because the mean of its divisors is an integer number (28789661160).

Almost surely, 2^111320023123 is an apocalyptic number.

111320023123 is a deficient number, since it is larger than the sum of its proper divisors (3838621517).

111320023123 is an equidigital number, since it uses as much as digits as its factorization.

111320023123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838621516.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 111320023123 its reverse (321320023111), we get a palindrome (432640046234).

The spelling of 111320023123 in words is "one hundred eleven billion, three hundred twenty million, twenty-three thousand, one hundred twenty-three".