Discover a lot of information on the number 3: properties, mathematical operations, how to write it, symbolism, numerology, representations and many other interesting things!

## Numerology and symbolism of the number 3

The number 3 (three) is the symbol of the trinity. He also represents the union.

## The famous 3

- the 3 Musketeers - the 3 little pigs

## Mathematical properties of 3

Is 3 a prime number? Yes
Is 3 a perfect number? No
Number of divisors 2
List of dividers 1, 3
Sum of divisors 4

## How to write / spell 3 in letters?

In letters, the number 3 is written as: Three. And in other languages? how does it spell?

3 in other languages
Write 3 in english Three
Write 3 in french Trois
Write 3 in spanish Tres
Write 3 in portuguese Três

Other ways to write 3
In letter Three
In roman numeral III
In binary 11
In octal 3
In US dollars USD 3.00 (\$)
In euros 3,00 EUR (€)
Some related numbers
Previous number 2
Next number 4
Next prime number 5

## Mathematical operations

Operations and solutions
3*2 = 6 The double of 3 is 6
3*3 = 9 The triple of 3 is 9
3/2 = 1.5 The half of 3 is 1.500000
3/3 = 1 The third of 3 is 1.000000
32 = 9 The square of 3 is 9.000000
33 = 27 The cube of 3 is 27.000000
√3 = 1.7320508075689 The square root of 3 is 1.732051
log(3) = 1.0986122886681 The natural (Neperian) logarithm of 3 is 1.098612
log10(3) = 0.47712125471966 The decimal logarithm (base 10) of 3 is 0.477121
sin(3) = 0.14112000805987 The sine of 3 is 0.141120
cos(3) = -0.98999249660045 The cosine of 3 is -0.989992
tan(3) = -0.14254654307428 The tangent of 3 is -0.142547