111143243443 has 4 divisors (see below), whose sum is σ = 111147211368. Its totient is φ = 111139275520.

The previous prime is 111143243417. The next prime is 111143243461. The reversal of 111143243443 is 344342341111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111143243443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111143243483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1941646 + ... + 1998067.

It is an arithmetic number, because the mean of its divisors is an integer number (27786802842).

Almost surely, 2^111143243443 is an apocalyptic number.

111143243443 is a deficient number, since it is larger than the sum of its proper divisors (3967925).

111143243443 is an equidigital number, since it uses as much as digits as its factorization.

111143243443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967924.

The product of its digits is 13824, while the sum is 31.

Adding to 111143243443 its reverse (344342341111), we get a palindrome (455485584554).

The spelling of 111143243443 in words is "one hundred eleven billion, one hundred forty-three million, two hundred forty-three thousand, four hundred forty-three".