Complete Number Analysis
13
It's a prime number!
It's a Fibonacci number! (Position: 7)
It's a happy number!
Number Visualizations
Binary Visual
1101
3 ones, 1 zeros
Mathematical Properties
Basic Properties
Parity:
Odd
Prime:
Yes
Square:
169
Cube:
2,197
Square root:
3.6056
Cube root:
2.3513
Factorial:
6,227,020,800
Divisors and Factors
Prime factors:
13
Number of divisors:
2
Sum of divisors:
1
Type:
Deficient
Divisors:
1, 13
Conversions
Binary:
1101
Octal:
15
Hexadecimal:
D
Roman:
XIII
Base64:
MTM=
Geometry and Measures
Circle (radius 13)
Area:
530.93 u²
Perimeter:
81.68 u
Diameter:
26 u
Square (side 13)
Area:
169 u²
Perimeter:
52 u
Diagonal:
18.38 u
3D Volumes
Cubo:
2,197 u³
Sphere:
9,202.77 u³
Cylinder:
6,902.08 u³
More Measures
Eq. triangle:
73.18 u²
Hexagon:
439.07 u²
Cube surf.:
1,014 u²
Numerology and Symbolism
Numerological Analysis
Sum of digits:
4
Numerological reduction:
4
Product of digits:
3
Unique Digits:
2
Meanings:
Stability
Work
Order
Number Curiosities
General fact: 13 is the number of loaves in a "baker's dozen".
Mathematical fact: 13 is the number of Archimedian solids.
Trivia: 13 is the speed of rush hour traffic on average in kilometres per hour in London.
Historical date: January 13th is the day in 1328 that Edward III of England marries Philippa of Hainault, daughter of the Count of Hainault.
More Interesting Properties
In the calendar
Day of the year:
13 January
Weeks:
1.9 weeks
Months:
0.4 months
Years:
0.04 years
In time
Seconds:
00:00:13
Minutes:
0.22 min
Hours:
0 h
Days:
0 days
Representations
Percentage:
13%
Angle:
13°
Temperature:
13°C = 55.4°F
Frequency:
13 Hz
Games
Dice (d6):
2 dados + 1
Chess:
e2
Cards:
K♠
Programmatically generated for number 13
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