383 is a prime number. It is a sexy prime because 383 + 6 = 389 is also prime.
383 is the only known multidigit palindromic Woodall prime.
383 is the sum of the first three three-digit palindromic primes: 383 = 101 + 131 + 151.
383 is the smallest prime that can be represented by the sum of a prime and its reversal: 383 = 241 + 142.
383 is a divisor of the Mersenne number 2191 - 1.
The Chevy 383 stroker engine uses an altered crankshaft to increase the stroke of the pistons.
Source: Prime Curios!