133504223 has 4 divisors (see below), whose sum is σ = 133606608. Its totient is φ = 133401840.

The previous prime is 133504219. The next prime is 133504229. The reversal of 133504223 is 322405331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322405331 = 2213 ⋅145687.

It is a cyclic number.

It is not a de Polignac number, because 133504223 - 2² = 133504219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133504229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49211 + ... + 51852.

It is an arithmetic number, because the mean of its divisors is an integer number (33401652).

Almost surely, 2^133504223 is an apocalyptic number.

133504223 is a deficient number, since it is larger than the sum of its proper divisors (102385).

133504223 is a wasteful number, since it uses less digits than its factorization.

133504223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102384.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 133504223 is about 11554.4027539289. The cubic root of 133504223 is about 511.0911190230.

Adding to 133504223 its reverse (322405331), we get a palindrome (455909554).

The spelling of 133504223 in words is "one hundred thirty-three million, five hundred four thousand, two hundred twenty-three".