+231 is a [natural number](/wiki/Natural_number), found between 230 and 232. Distinct in its form, it is the 21st [triangular number](/wiki/Triangular_number), and a product of three unique primes.
+## See also
+- [Prime Number](/wiki/Prime_number)
+- [Composite Number](/wiki/Composite_number)
+- [Number Theory](/wiki/Number_theory)
... 1 more lines