133204223 has 4 divisors (see below), whose sum is σ = 133512288. Its totient is φ = 132896160.

The previous prime is 133204207. The next prime is 133204229. The reversal of 133204223 is 322402331.

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 133204223 - 2⁴ = 133204207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133204195 and 133204204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133204229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153383 + ... + 154248.

It is an arithmetic number, because the mean of its divisors is an integer number (33378072).

Almost surely, 2^133204223 is an apocalyptic number.

133204223 is a deficient number, since it is larger than the sum of its proper divisors (308065).

133204223 is an equidigital number, since it uses as much as digits as its factorization.

133204223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308064.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 133204223 is about 11541.4133883160. The cubic root of 133204223 is about 510.7080042317.

Adding to 133204223 its reverse (322402331), we get a palindrome (455606554).

The spelling of 133204223 in words is "one hundred thirty-three million, two hundred four thousand, two hundred twenty-three".