11116823 has 4 divisors (see below), whose sum is σ = 11299128. Its totient is φ = 10934520.

The previous prime is 11116811. The next prime is 11116829. The reversal of 11116823 is 32861111.

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-11116823 is a prime.

It is a super-2 number, since 2×11116823² = 247167507226658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11116829) 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 3 ways as a sum of consecutive naturals, for example, 91061 + ... + 91182.

It is an arithmetic number, because the mean of its divisors is an integer number (2824782).

Almost surely, 2^11116823 is an apocalyptic number.

11116823 is a deficient number, since it is larger than the sum of its proper divisors (182305).

11116823 is an equidigital number, since it uses as much as digits as its factorization.

11116823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182304.

The product of its digits is 288, while the sum is 23.

The square root of 11116823 is about 3334.1900065833. The cubic root of 11116823 is about 223.1825474100.

Adding to 11116823 its reverse (32861111), we get a palindrome (43977934).

The spelling of 11116823 in words is "eleven million, one hundred sixteen thousand, eight hundred twenty-three".