111143345 has 4 divisors (see below), whose sum is σ = 133372020. Its totient is φ = 88914672.

The previous prime is 111143323. The next prime is 111143363. The reversal of 111143345 is 543341111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543341111 = 11483 ⋅47317.

It can be written as a sum of positive squares in 2 ways, for example, as 65351056 + 45792289 = 8084^2 + 6767^2 .

It is a cyclic number.

It is not a de Polignac number, because 111143345 - 2¹⁸ = 110881201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111143345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11114330 + ... + 11114339.

It is an arithmetic number, because the mean of its divisors is an integer number (33343005).

Almost surely, 2^111143345 is an apocalyptic number.

It is an amenable number.

111143345 is a deficient number, since it is larger than the sum of its proper divisors (22228675).

111143345 is an equidigital number, since it uses as much as digits as its factorization.

111143345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22228674.

The product of its digits is 720, while the sum is 23.

The square root of 111143345 is about 10542.4544106199. The cubic root of 111143345 is about 480.7963415867.

Adding to 111143345 its reverse (543341111), we get a palindrome (654484456).

The spelling of 111143345 in words is "one hundred eleven million, one hundred forty-three thousand, three hundred forty-five".