+131 is a [prime number](/wiki/Prime_Number), an integer divisible only by itself and one. It stands as a [palindromic prime](/wiki/Palindromic_Prime), reflecting its form both ways, and is also a Chen prime.
+## See also
+- [Odd Number](/wiki/Odd_Number)
+- [Happy Number](/wiki/Happy_Number)
+- [Number Theory](/wiki/Number_Theory)
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