111311443 has 4 divisors (see below), whose sum is σ = 117169960. Its totient is φ = 105452928.

The previous prime is 111311419. The next prime is 111311449. The reversal of 111311443 is 344113111.

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 111311443 - 2⁹ = 111310931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 5858497 = 111311443 / (1 + 1 + 1 + 3 + 1 + 1 + 4 + 4 + 3).

It is a self number, because there is not a number n which added to its sum of digits gives 111311443.

It is not an unprimeable number, because it can be changed into a prime (111311449) 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, 2929230 + ... + 2929267.

It is an arithmetic number, because the mean of its divisors is an integer number (29292490).

Almost surely, 2^111311443 is an apocalyptic number.

111311443 is a deficient number, since it is larger than the sum of its proper divisors (5858517).

111311443 is an equidigital number, since it uses as much as digits as its factorization.

111311443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5858516.

The product of its digits is 144, while the sum is 19.

The square root of 111311443 is about 10550.4238303492. The cubic root of 111311443 is about 481.0386118787.

Adding to 111311443 its reverse (344113111), we get a palindrome (455424554).

The spelling of 111311443 in words is "one hundred eleven million, three hundred eleven thousand, four hundred forty-three".