133203 has 8 divisors (see below), whose sum is σ = 203008. Its totient is φ = 76104.

The previous prime is 133201. The next prime is 133213. The reversal of 133203 is 302331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133203 - 2¹ = 133201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3151 + ... + 3192.

It is an arithmetic number, because the mean of its divisors is an integer number (25376).

2¹³³²⁰³ is an apocalyptic number.

133203 is a deficient number, since it is larger than the sum of its proper divisors (69805).

133203 is an equidigital number, since it uses as much as digits as its factorization.

133203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6353.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 133203 is about 364.9698617694. The cubic root of 133203 is about 51.0706441224.

Adding to 133203 its reverse (302331), we get a palindrome (435534).

The spelling of 133203 in words is "one hundred thirty-three thousand, two hundred three".