111031123023 has 12 divisors (see below), whose sum is σ = 168819251640. Its totient is φ = 70124919696.

The previous prime is 111031122971. The next prime is 111031123037. The reversal of 111031123023 is 320321130111.

It is not a de Polignac number, because 111031123023 - 2⁸ = 111031122767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111031122987 and 111031123005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111031123223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 324652236 + ... + 324652577.

It is an arithmetic number, because the mean of its divisors is an integer number (14068270970).

Almost surely, 2^111031123023 is an apocalyptic number.

111031123023 is a deficient number, since it is larger than the sum of its proper divisors (57788128617).

111031123023 is a wasteful number, since it uses less digits than its factorization.

111031123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649304838 (or 649304835 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 111031123023 its reverse (320321130111), we get a palindrome (431352253134).

The spelling of 111031123023 in words is "one hundred eleven billion, thirty-one million, one hundred twenty-three thousand, twenty-three".