The Number
1381
One Thousand Three Hundred and Eighty-One
Nearby Numbers
Positive, nonzero integers within three units
Scientific Notation
Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.
1.381e3
Reciprocal
A number multiplied with its reciprocal is one.
0.000724112961622013
The reciprocal of 1381.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 1381 is not a palindrome.
A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
One thousand three hundred and eighty-one is the 221st prime number. See primes in Base 10 Decimal
Not A Composite
Composites have more than just these two factors.
One Thousand Three Hundred and Eighty-One is not a composite number because it has exactly two factors: One and One Thousand Three Hundred and Eighty-One
Prime Factors
The number one thousand three hundred and eighty-one has the following 1 prime factor:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
13811
= 1381
Base Conversions
The number one thousand three hundred and eighty-one in 35 different bases