13205223 has 12 divisors (see below), whose sum is σ = 19121440. Its totient is φ = 8781696.

The previous prime is 13205207. The next prime is 13205249. The reversal of 13205223 is 32250231.

13205223 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13205223 - 2⁴ = 13205207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13205196 and 13205205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13205273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2583 + ... + 5751.

Almost surely, 2^13205223 is an apocalyptic number.

13205223 is a deficient number, since it is larger than the sum of its proper divisors (5916217).

13205223 is a wasteful number, since it uses less digits than its factorization.

13205223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638 (or 3635 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 13205223 is about 3633.8991455460. The cubic root of 13205223 is about 236.3643168933.

Adding to 13205223 its reverse (32250231), we get a palindrome (45455454).

The spelling of 13205223 in words is "thirteen million, two hundred five thousand, two hundred twenty-three".