133508803 has 8 divisors (see below), whose sum is σ = 141685200. Its totient is φ = 125368320.

The previous prime is 133508797. The next prime is 133508819. The reversal of 133508803 is 308805331.

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

It is a cyclic number.

It is not a de Polignac number, because 133508803 - 2¹⁷ = 133377731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133508863) 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 7 ways as a sum of consecutive naturals, for example, 1113 + ... + 16378.

It is an arithmetic number, because the mean of its divisors is an integer number (17710650).

Almost surely, 2^133508803 is an apocalyptic number.

133508803 is a deficient number, since it is larger than the sum of its proper divisors (8176397).

133508803 is a wasteful number, since it uses less digits than its factorization.

133508803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17957.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 133508803 is about 11554.6009450781. The cubic root of 133508803 is about 511.0969634588.

The spelling of 133508803 in words is "one hundred thirty-three million, five hundred eight thousand, eight hundred three".