18,321 in words
18,321
eighteen thousand three hundred twenty-one
18,321 is written eighteen thousand three hundred twenty-one.
Ways to write it
- As an ordinal
- eighteen thousand three hundred twenty-first
- Expanded form
- 10,000 + 8,000 + 300 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 1 | 10,000 |
| thousands | 8 | 8,000 |
| hundreds | 3 | 300 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 31, 93, 197, 591, 6,107 and 18,321 (8 factors)
- First 10 multiples
- 18,321, 36,642, 54,963, 73,284, 91,605, 109,926, 128,247, 146,568, 164,889, 183,210
- Square
- 18,321 × 18,321 = 335,659,041
- Square root
- ≈ 135.36
- Sum of the digits
- 1 + 8 + 3 + 2 + 1 = 15
- Rounded to the nearest 10
- 18,320
- Rounded to the nearest 100
- 18,300
- Rounded to the nearest 1000
- 18,000
- Number before
- 18,320
- Number after
- 18,322
- In binary
100011110010001
Quick check
What number comes just after 18,321?
Show the answer
18,322
Is 18,321 even or odd?
Show the answer
Odd
What is 18,321 + 10?
Show the answer
18,331
Practice with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 18,321 in words?
18,321 is written "eighteen thousand three hundred twenty-one".
Is 18,321 a prime number?
No. 18,321 is a composite number, because it has more than two factors.
What are the factors of 18,321?
The factors of 18,321 are 1, 3, 31, 93, 197, 591, 6,107 and 18,321.