# 135

## 135 is an odd composite number composed of two prime numbers multiplied together.

What does the number 135 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 8 divisors.

135 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 135:

### 33 × 5

(3 × 3 × 3 × 5)

See below for interesting mathematical facts about the number 135 from the Numbermatics database.

### Names of 135

• Cardinal: 135 can be written as One hundred thirty-five.

### Scientific notation

• Scientific notation: 1.35 × 102

### Factors of 135

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 8

### Divisors of 135

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 240
• Sum of proper divisors (its aliquot sum) s(n): 105
• 135 is a deficient number, because the sum of its proper divisors (105) is less than itself. Its deficiency is 30

### Bases of 135

• Binary: 100001112
• Base-36: 3R

### Squares and roots of 135

• 135 squared (1352) is 18225
• 135 cubed (1353) is 2460375
• The square root of 135 is 11.6189500387
• The cube root of 135 is 5.1299278401

### Scales and comparisons

How big is 135?
• 135 seconds is equal to 2 minutes, 15 seconds.
• To count from 1 to 135 would take you about seven seconds.

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 135 cubic inches would be around 0.4 feet tall.

### Recreational maths with 135

• 135 backwards is 531
• 135 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 135's digits is 9
• More coming soon!