2233

2233 = 7 x 11 x 29.

2233 becomes a prime if any digit is deleted: 223 and 233 are primes.

2233 is a number such that each digit leaves the same nonzero remainder when each is divided into the number.

2233 is a generalized polygonal number.

A transit of the planet Mercury (as seen from Earth) will occur in the year 2233.

Source: On-Line Encyclopedia of Integer Sequences