111313100123 has 16 divisors (see below), whose sum is σ = 124358977440. Its totient is φ = 99015436800.

The previous prime is 111313100117. The next prime is 111313100131. The reversal of 111313100123 is 321001313111.

It is a cyclic number.

It is not a de Polignac number, because 111313100123 - 2²⁰ = 111312051547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111313100113) 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, 273308 + ... + 545273.

It is an arithmetic number, because the mean of its divisors is an integer number (7772436090).

Almost surely, 2^111313100123 is an apocalyptic number.

111313100123 is a deficient number, since it is larger than the sum of its proper divisors (13045877317).

111313100123 is a wasteful number, since it uses less digits than its factorization.

111313100123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819038.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 111313100123 its reverse (321001313111), we get a palindrome (432314413234).

The spelling of 111313100123 in words is "one hundred eleven billion, three hundred thirteen million, one hundred thousand, one hundred twenty-three".