Divisors of the Positive Integer 13

1, 13

Sum of all the Divisors of 13, including itself

14

Sum of the Proper Divisors of 13

1

Properties of the number 13

The integer 13 is an odd number.
The integer 13 is a Prime number.
1 is less than 13, so 13 is a deficient number.

The number 13 as a Roman Numeral

XIII

The number 13 in various Numeral Systems

Base Representation
2:1101
3:111
4:31
5:23
6:21
7:16
8:15
9:14
10:13
11:12
12:11
13:10
14:D
15:D
16:D
17:D
18:D
19:D
20:D
21:D
22:D
23:D
24:D
25:D
26:D
27:D
28:D
29:D
30:D
31:D
32:D
33:D
34:D
35:D
36:D