13816823 has 2 divisors, whose sum is σ = 13816824. Its totient is φ = 13816822.

The previous prime is 13816787. The next prime is 13816837. The reversal of 13816823 is 32861831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13816823 - 2¹² = 13812727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13816823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13816843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6908411 + 6908412.

It is an arithmetic number, because the mean of its divisors is an integer number (6908412).

Almost surely, 2^13816823 is an apocalyptic number.

13816823 is a deficient number, since it is larger than the sum of its proper divisors (1).

13816823 is an equidigital number, since it uses as much as digits as its factorization.

13816823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 13816823 is about 3717.0987342281. The cubic root of 13816823 is about 239.9584592455.

It can be divided in two parts, 138 and 16823, that added together give a palindrome (16961).

The spelling of 13816823 in words is "thirteen million, eight hundred sixteen thousand, eight hundred twenty-three".