133209132 has 48 divisors (see below), whose sum is σ = 360541440. Its totient is φ = 37490112.

The previous prime is 133209119. The next prime is 133209143. The reversal of 133209132 is 231902331.

133209132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6207 + ... + 17462.

It is an arithmetic number, because the mean of its divisors is an integer number (7511280).

Almost surely, 2^133209132 is an apocalyptic number.

133209132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133209132 is an abundant number, since it is smaller than the sum of its proper divisors (227332308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133209132 is a wasteful number, since it uses less digits than its factorization.

133209132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23750 (or 23748 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 133209132 is about 11541.6260552835. The cubic root of 133209132 is about 510.7142778937.

The spelling of 133209132 in words is "one hundred thirty-three million, two hundred nine thousand, one hundred thirty-two".