13812823 has 4 divisors (see below), whose sum is σ = 14625360. Its totient is φ = 13000288.

The previous prime is 13812809. The next prime is 13812833. The reversal of 13812823 is 32821831.

13812823 is digitally balanced in base 2, because in such base 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 13812823 - 2⁹ = 13812311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13812791 and 13812800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13812833) 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, 406243 + ... + 406276.

It is an arithmetic number, because the mean of its divisors is an integer number (3656340).

Almost surely, 2^13812823 is an apocalyptic number.

13812823 is a deficient number, since it is larger than the sum of its proper divisors (812537).

13812823 is an equidigital number, since it uses as much as digits as its factorization.

13812823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812536.

The product of its digits is 2304, while the sum is 28.

The square root of 13812823 is about 3716.5606412381. The cubic root of 13812823 is about 239.9353008470.

The spelling of 13812823 in words is "thirteen million, eight hundred twelve thousand, eight hundred twenty-three".