313

Number
$313$ (three hundred and thirteen) is:


 * The $65$th prime number.


 * The $2$nd of the $20$th pair of twin primes, with $311$.


 * The $11$th palindromic prime:
 * $2, 3, 5, 7, 11, 101, 131, 151, 181, 191, 313, \ldots$


 * The $9$th integer after $0, 1, 3, 5, 7, 9, 33, 99$ which is palindromic in both decimal and binary:
 * $313_{10} = 100 \, 111 \, 001_2$