# 403

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

What does the number 403 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

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

## Prime factorization of 403:

### 13 × 31

See below for interesting mathematical facts about the number 403 from the Numbermatics database.

### Names of 403

• Cardinal: 403 can be written as Four hundred three.

### Scientific notation

• Scientific notation: 4.03 × 102

### Factors of 403

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 44

### Divisors of 403

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 448
• Sum of proper divisors (its aliquot sum) s(n): 45
• 403 is a deficient number, because the sum of its proper divisors (45) is less than itself. Its deficiency is 358

### Bases of 403

• Binary: 1100100112
• Base-36: B7

### Squares and roots of 403

• 403 squared (4032) is 162409
• 403 cubed (4033) is 65450827
• The square root of 403 is 20.0748598999
• The cube root of 403 is 7.3864372953

### Scales and comparisons

How big is 403?
• 403 seconds is equal to 6 minutes, 43 seconds.
• To count from 1 to 403 would take you about three minutes.

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 403 cubic inches would be around 0.6 feet tall.

### Recreational maths with 403

• 403 backwards is 304
• The number of decimal digits it has is: 3
• The sum of 403's digits is 7
• More coming soon!

MLA style:
"Number 403 - Facts about the integer". Numbermatics.com. 2021. Web. 23 October 2021.

APA style:
Numbermatics. (2021). Number 403 - Facts about the integer. Retrieved 23 October 2021, from https://numbermatics.com/n/403/

Chicago style:
Numbermatics. 2021. "Number 403 - Facts about the integer". https://numbermatics.com/n/403/

The information we have on file for 403 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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