133313203 has 4 divisors (see below), whose sum is σ = 137910240. Its totient is φ = 128716168.

The previous prime is 133313161. The next prime is 133313231. The reversal of 133313203 is 302313331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133313203 - 2²¹ = 131216051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133313503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2298475 + ... + 2298532.

It is an arithmetic number, because the mean of its divisors is an integer number (34477560).

Almost surely, 2^133313203 is an apocalyptic number.

133313203 is a deficient number, since it is larger than the sum of its proper divisors (4597037).

133313203 is an equidigital number, since it uses as much as digits as its factorization.

133313203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4597036.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 133313203 is about 11546.1336818868. The cubic root of 133313203 is about 510.8472435279.

Adding to 133313203 its reverse (302313331), we get a palindrome (435626534).

The spelling of 133313203 in words is "one hundred thirty-three million, three hundred thirteen thousand, two hundred three".