132

This number is a composite.

132 and its reversal (231) are both divisible by the prime 11 (132/11 = 12, 231/11 = 21). Note that the resulting quotients are also reversals. [Gevisier]

The concatenation of its three distinct prime factors (2, 3, and 11) forms primes in three ways: 2311, 2113, and 1123. [Trotter]

π(132) = 1¹ + 3³ + 2². [Firoozbakht]

The smallest composite number such that all its digits are necessary to write its prime factors. [Capelle]