11623 has 4 divisors (see below), whose sum is σ = 11880. Its totient is φ = 11368.

The previous prime is 11621. The next prime is 11633. The reversal of 11623 is 32611.

11623 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

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 11623 - 2¹ = 11621 is a prime.

It is a Duffinian number.

11623 is an undulating number in base 14.

11623 is a lucky number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621) 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, 40 + ... + 157.

It is an arithmetic number, because the mean of its divisors is an integer number (2970).

2¹¹⁶²³ is an apocalyptic number.

11623 is a deficient number, since it is larger than the sum of its proper divisors (257).

11623 is an equidigital number, since it uses as much as digits as its factorization.

11623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256.

The product of its digits is 36, while the sum is 13.

The square root of 11623 is about 107.8100180874. The cubic root of 11623 is about 22.6519752934.

It can be divided in two parts, 1162 and 3, that multiplied together give a triangular number (3486 = T₈₃).

The spelling of 11623 in words is "eleven thousand, six hundred twenty-three".