11823 has 8 divisors (see below), whose sum is σ = 18048. Its totient is φ = 6744.

The previous prime is 11821. The next prime is 11827. The reversal of 11823 is 32811.

It is a happy number.

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

It is not a de Polignac number, because 11823 - 2¹ = 11821 is a prime.

11823 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261 + ... + 302.

It is an arithmetic number, because the mean of its divisors is an integer number (2256).

2¹¹⁸²³ is an apocalyptic number.

11823 is a deficient number, since it is larger than the sum of its proper divisors (6225).

11823 is an equidigital number, since it uses as much as digits as its factorization.

11823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573.

The product of its digits is 48, while the sum is 15.

The square root of 11823 is about 108.7336194560. The cubic root of 11823 is about 22.7811632661.

It can be divided in two parts, 118 and 23, that added together give a palindrome (141).

The spelling of 11823 in words is "eleven thousand, eight hundred twenty-three".