1011

1011 = 3 x 337.

1011 is the smallest number without trailing zeroes such that the reversal of its cube is the cube of a different number (1101).

1011 has a square that is formed by inserting three 2s into it: 1011² = 1022121.

1011 is 323 (palindromic) in base 18. 1011 has a representation ending in 3 in base 4, 6, 7, 8, 9, 12, 14, and 18.

The Nokia 1011 was the first mass-produced GSM phone.

Source: Number Gossip