4531

4531 is a natural number that follows 4530 and precedes 4532. In mathematics, it is notable for being a composite number.

It factors as 23 × 197, where both 23 and 197 are primes. This makes 4531 a squarefree semiprime. Its divisors are only 1, 23, 197, and 4531. The sum of its digits is 13, giving it a digital root of 4. Its approximate square root is 67.3, placing it between 67^2 and 68^2.

In Roman numerals, 4531 can be written as MMMMDXXXI in common modern practice. As a four-digit decimal number, it appears primarily in catalogues, enumerations, or identifiers rather than as a mathematical constant or historical year. In abstract terms, 4531 can be used as an example of a product of two distinct primes in introductory number theory.