133303233 has 16 divisors (see below), whose sum is σ = 207452160. Its totient is φ = 74552016.

The previous prime is 133303217. The next prime is 133303237. The reversal of 133303233 is 332303331.

It is not a de Polignac number, because 133303233 - 2⁴ = 133303217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (133303237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66543 + ... + 68516.

It is an arithmetic number, because the mean of its divisors is an integer number (12965760).

Almost surely, 2^133303233 is an apocalyptic number.

It is an amenable number.

133303233 is a deficient number, since it is larger than the sum of its proper divisors (74148927).

133303233 is a wasteful number, since it uses less digits than its factorization.

133303233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135116.

The product of its (nonzero) digits is 1458, while the sum is 21.

The square root of 133303233 is about 11545.7019275573. The cubic root of 133303233 is about 510.8345084202.

Adding to 133303233 its reverse (332303331), we get a palindrome (465606564).

The spelling of 133303233 in words is "one hundred thirty-three million, three hundred three thousand, two hundred thirty-three".