111543520103 has 16 divisors (see below), whose sum is σ = 113081585760. Its totient is φ = 110019379200.

The previous prime is 111543520079. The next prime is 111543520157. The reversal of 111543520103 is 301025345111.

It is a cyclic number.

It is not a de Polignac number, because 111543520103 - 2¹⁰ = 111543519079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111543120103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11081693 + ... + 11091753.

It is an arithmetic number, because the mean of its divisors is an integer number (7067599110).

Almost surely, 2^111543520103 is an apocalyptic number.

111543520103 is a deficient number, since it is larger than the sum of its proper divisors (1538065657).

111543520103 is a wasteful number, since it uses less digits than its factorization.

111543520103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10738.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 111543520103 its reverse (301025345111), we get a palindrome (412568865214).

The spelling of 111543520103 in words is "one hundred eleven billion, five hundred forty-three million, five hundred twenty thousand, one hundred three".