133203132 has 18 divisors (see below), whose sum is σ = 336708008. Its totient is φ = 44401032.

The previous prime is 133203113. The next prime is 133203139. The reversal of 133203132 is 231302331.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133203139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1850008 + ... + 1850079.

Almost surely, 2^133203132 is an apocalyptic number.

133203132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133203132 is an abundant number, since it is smaller than the sum of its proper divisors (203504876).

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

133203132 is a wasteful number, since it uses less digits than its factorization.

133203132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700097 (or 3700092 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133203132 is about 11541.3661236441. The cubic root of 133203132 is about 510.7066099217.

Adding to 133203132 its reverse (231302331), we get a palindrome (364505463).

The spelling of 133203132 in words is "one hundred thirty-three million, two hundred three thousand, one hundred thirty-two".