11923 has 2 divisors, whose sum is σ = 11924. Its totient is φ = 11922.

The previous prime is 11909. The next prime is 11927. The reversal of 11923 is 32911.

It is a strong prime.

It is an emirp because it is prime and its reverse (32911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11923 - 2⁹ = 11411 is a prime.

11923 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 11897 and 11906.

It is not a weakly prime, because it can be changed into another prime (11927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5961 + 5962.

It is an arithmetic number, because the mean of its divisors is an integer number (5962).

2¹¹⁹²³ is an apocalyptic number.

11923 is a deficient number, since it is larger than the sum of its proper divisors (1).

11923 is an equidigital number, since it uses as much as digits as its factorization.

11923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54, while the sum is 16.

The square root of 11923 is about 109.1924905843. The cubic root of 11923 is about 22.8452114068.

It can be divided in two parts, 11 and 923, that multiplied together give a triangular number (10153 = T₁₄₂).

The spelling of 11923 in words is "eleven thousand, nine hundred twenty-three".