11791823 has 4 divisors (see below), whose sum is σ = 11884800. Its totient is φ = 11698848.

The previous prime is 11791817. The next prime is 11791831. The reversal of 11791823 is 32819711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32819711 = 1613 ⋅20347.

It is a cyclic number.

It is not a de Polignac number, because 11791823 - 2⁴ = 11791807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11791823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11791883) by changing a digit.

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, 46298 + ... + 46551.

It is an arithmetic number, because the mean of its divisors is an integer number (2971200).

Almost surely, 2^11791823 is an apocalyptic number.

11791823 is a deficient number, since it is larger than the sum of its proper divisors (92977).

11791823 is an equidigital number, since it uses as much as digits as its factorization.

11791823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92976.

The product of its digits is 3024, while the sum is 32.

The square root of 11791823 is about 3433.9223928330. The cubic root of 11791823 is about 227.6112115764.

The spelling of 11791823 in words is "eleven million, seven hundred ninety-one thousand, eight hundred twenty-three".