132 is the natural number following 131 and preceding 133.
132 is a Catalan number, a Harshad number, a pronic number.
If you take the sum of all 2-digit numbers you can make from 132, you get 132:
12 + 13 + 21 + 23 + 31 + 32 = 132. 132 is the smallest number with this property. But there is no number that, when added up to its own digits, adds up to 132, making it a self number.
In other fields
When counting in binary with fingers, expressing 132 as 0010000100 results in the isolation of the middle fingers of each hand, a gesture generally considered rude. The corresponding one-handed gesture is the representation of 4.
For the year 132 AD, see 132.