11109143 has 8 divisors (see below), whose sum is σ = 11868768. Its totient is φ = 10361344.

The previous prime is 11109127. The next prime is 11109149. The reversal of 11109143 is 34190111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11109143 - 2⁴ = 11109127 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 (11109149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971 + ... + 4812.

It is an arithmetic number, because the mean of its divisors is an integer number (1483596).

Almost surely, 2^11109143 is an apocalyptic number.

11109143 is a deficient number, since it is larger than the sum of its proper divisors (759625).

11109143 is a wasteful number, since it uses less digits than its factorization.

11109143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5913.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 11109143 is about 3333.0381035926. The cubic root of 11109143 is about 223.1311407318.

Adding to 11109143 its reverse (34190111), we get a palindrome (45299254).

The spelling of 11109143 in words is "eleven million, one hundred nine thousand, one hundred forty-three".