The Number
12391
Twelve Thousand Three Hundred and Ninety-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.
1.2391e4
Reciprocal
A number multiplied with its reciprocal is one.
0.0000807037365830038
The reciprocal of 12391.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 12391 is not a palindrome.
A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Twelve thousand three hundred and ninety-one is the 1479th prime number. See primes in Base 10 Decimal
Not A Composite
Composites have more than just these two factors.
Twelve Thousand Three Hundred and Ninety-One is not a composite number because it has exactly two factors: One and Twelve Thousand Three Hundred and Ninety-One
Prime Factors
The number twelve thousand three hundred and ninety-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
123911
= 12391
Base Conversions
The number twelve thousand three hundred and ninety-one in 35 different bases