111031010123 has 16 divisors (see below), whose sum is σ = 121504271616. Its totient is φ = 100621441440.

The previous prime is 111031010119. The next prime is 111031010161. The reversal of 111031010123 is 321010130111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111031010123 - 2² = 111031010119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111031010098 and 111031010107.

It is not an unprimeable number, because it can be changed into a prime (111031010183) 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, 5450465 + ... + 5470797.

It is an arithmetic number, because the mean of its divisors is an integer number (7594016976).

Almost surely, 2^111031010123 is an apocalyptic number.

111031010123 is a deficient number, since it is larger than the sum of its proper divisors (10473261493).

111031010123 is a wasteful number, since it uses less digits than its factorization.

111031010123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21874.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 111031010123 its reverse (321010130111), we get a palindrome (432041140234).

The spelling of 111031010123 in words is "one hundred eleven billion, thirty-one million, ten thousand, one hundred twenty-three".