Names of 1381
| Nominal | 1381 |
| Cardinal | one thousand three hundred eighty-one |
| Ordinal | 1,381st |
| This number as US currency | one thousand three hundred eighty-one dollars |
| Is 1381 an odd number? | 1381 is an odd number |
| Is 1381 an even number? | 1381 is NOT an even number |
| Is 1381 a palindrome? | 1381 is NOT a palindrome number |
| Is 1381 a triangle number? | 1381 is NOT a triangle number |
1381 in other Bases
| Base 2 (Binary) | 101011001012 |
| Base 3 (Ternary) | 12200113 |
| Base 4 (Quaternary) | 1112114 |
| Base 5 (Quinary) | 210115 |
| Base 6 (Senary) | 102216 |
| Base 8 (Octal) | 25458 |
| Base 12 (Duodecimal) | 97112 |
| Base 16 (Hexadecimal) | 56516 |
| Base 20 (Vigesimal) | 39120 |
Primes and Factors tests for 1381
| Is 1381 a Prime Number? | 1381 is a prime |
| Is 1381 a perfect number? | 1381 is NOT a perfect number |
| Is 1381 a Mersenne Prime? | 1381 is NOT a Mersenne prime |
| Is 1381 a Fermat Prime? | 1381 is NOT a Fermat prime |
| Is 1381 a Fibonacci Prime? | 1381 is NOT a Fibonacci prime |
| Is 1381 a Partition Prime? | 1381 is NOT a Partition prime |
| Is 1381 a Pell Prime? | 1381 is NOT a Pell prime |
| Prime Factors | Prime factors of 1381 |
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1381 in other Numerals
| 1381 in Roman Numeral | MCCCLXXXI |
| 1381 in Chinese Numeral | 壹仟叄佰捌拾壹 |
| 1381 in Egyptian Numeral | 𓆼𓍤𓎍𓏺 |
| 1381 in Babylonian Numeral |   |
Roots and stuff for 1381
| Is 1381 a square number? | 1381 is NOT a square number |
| Is 1381 a cube number? | 1381 is NOT a cube number |
| Square root of the number 1381 | 37.161808352124 |
| Cube root of the number 1381 | 11.136051383973 |
Recreational math for 1381
| Number 1381 reversed | 1831 |
| Sum of the digits | 13 |
| No of digits | 4 |