11423 has 2 divisors, whose sum is σ = 11424. Its totient is φ = 11422.

The previous prime is 11411. The next prime is 11437. The reversal of 11423 is 32411.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (32411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11423 - 2¹⁰ = 10399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5711 + 5712.

It is an arithmetic number, because the mean of its divisors is an integer number (5712).

2¹¹⁴²³ is an apocalyptic number.

11423 is a deficient number, since it is larger than the sum of its proper divisors (1).

11423 is an equidigital number, since it uses as much as digits as its factorization.

11423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 11.

The square root of 11423 is about 106.8784356173. The cubic root of 11423 is about 22.5212967083.

Adding to 11423 its reverse (32411), we get a palindrome (43834).

It can be divided in two parts, 11 and 423, that added together give a palindrome (434).

The spelling of 11423 in words is "eleven thousand, four hundred twenty-three", and thus it is an iban number.