111543304423 has 4 divisors (see below), whose sum is σ = 112585765320. Its totient is φ = 110500843528.

The previous prime is 111543304417. The next prime is 111543304451. The reversal of 111543304423 is 324403345111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111543304423 - 2⁵ = 111543304391 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111543104423) 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 3 ways as a sum of consecutive naturals, for example, 521230288 + ... + 521230501.

It is an arithmetic number, because the mean of its divisors is an integer number (28146441330).

Almost surely, 2^111543304423 is an apocalyptic number.

111543304423 is a deficient number, since it is larger than the sum of its proper divisors (1042460897).

111543304423 is a wasteful number, since it uses less digits than its factorization.

111543304423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042460896.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 111543304423 its reverse (324403345111), we get a palindrome (435946649534).

The spelling of 111543304423 in words is "one hundred eleven billion, five hundred forty-three million, three hundred four thousand, four hundred twenty-three".