118823 has 4 divisors (see below), whose sum is σ = 122688. Its totient is φ = 114960.

The previous prime is 118819. The next prime is 118831. The reversal of 118823 is 328811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118823 - 2² = 118819 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 (118843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1886 + ... + 1947.

It is an arithmetic number, because the mean of its divisors is an integer number (30672).

2¹¹⁸⁸²³ is an apocalyptic number.

118823 is a deficient number, since it is larger than the sum of its proper divisors (3865).

118823 is an equidigital number, since it uses as much as digits as its factorization.

118823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3864.

The product of its digits is 384, while the sum is 23.

The square root of 118823 is about 344.7071220616. The cubic root of 118823 is about 49.1624484874.

The spelling of 118823 in words is "one hundred eighteen thousand, eight hundred twenty-three".