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13223 = 71889
BaseRepresentation
bin11001110100111
3200010202
43032213
5410343
6141115
753360
oct31647
920122
1013223
119a31
12779b
136032
144b67
153db8
hex33a7

13223 has 4 divisors (see below), whose sum is σ = 15120. Its totient is φ = 11328.

The previous prime is 13219. The next prime is 13229. The reversal of 13223 is 32231.

Adding to 13223 its reverse (32231), we get a palindrome (45454).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32231 = 167193.

It is a cyclic number.

It is not a de Polignac number, because 13223 - 22 = 13219 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13229) 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, 938 + ... + 951.

It is an arithmetic number, because the mean of its divisors is an integer number (3780).

213223 is an apocalyptic number.

13223 is a deficient number, since it is larger than the sum of its proper divisors (1897).

13223 is an equidigital number, since it uses as much as digits as its factorization.

13223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896.

The product of its digits is 36, while the sum is 11.

The square root of 13223 is about 114.9913040190. The cubic root of 13223 is about 23.6470334650.

The spelling of 13223 in words is "thirteen thousand, two hundred twenty-three".

Divisors: 1 7 1889 13223