133203204 has 60 divisors (see below), whose sum is σ = 354835404. Its totient is φ = 43557696.

The previous prime is 133203193. The next prime is 133203221. The reversal of 133203204 is 402302331.

It can be written as a sum of positive squares in 2 ways, for example, as 103063104 + 30140100 = 10152^2 + 5490^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13294 + ... + 21050.

Almost surely, 2^133203204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133203204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177417702).

133203204 is an abundant number, since it is smaller than the sum of its proper divisors (221632200).

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

133203204 is a wasteful number, since it uses less digits than its factorization.

133203204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7826 (or 7815 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 133203204 is about 11541.3692428585. The cubic root of 133203204 is about 510.7067019387.

Adding to 133203204 its reverse (402302331), we get a palindrome (535505535).

The spelling of 133203204 in words is "one hundred thirty-three million, two hundred three thousand, two hundred four".