12723823 has 4 divisors (see below), whose sum is σ = 14541520. Its totient is φ = 10906128.

The previous prime is 12723797. The next prime is 12723833. The reversal of 12723823 is 32832721.

12723823 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

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 12723823 - 2⁵ = 12723791 is a prime.

12723823 is strictly pandigital in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 12723791 and 12723800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12723833) 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, 908838 + ... + 908851.

It is an arithmetic number, because the mean of its divisors is an integer number (3635380).

Almost surely, 2^12723823 is an apocalyptic number.

12723823 is a deficient number, since it is larger than the sum of its proper divisors (1817697).

12723823 is an equidigital number, since it uses as much as digits as its factorization.

12723823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817696.

The product of its digits is 4032, while the sum is 28.

The square root of 12723823 is about 3567.0468177471. The cubic root of 12723823 is about 233.4564477278.

The spelling of 12723823 in words is "twelve million, seven hundred twenty-three thousand, eight hundred twenty-three".