133385303 has 4 divisors (see below), whose sum is σ = 139184688. Its totient is φ = 127585920.

The previous prime is 133385293. The next prime is 133385353. The reversal of 133385303 is 303583331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303583331 = 17 ⋅17857843.

It is a cyclic number.

It is not a de Polignac number, because 133385303 - 2¹⁴ = 133368919 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 (133385353) 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, 2899658 + ... + 2899703.

It is an arithmetic number, because the mean of its divisors is an integer number (34796172).

Almost surely, 2^133385303 is an apocalyptic number.

133385303 is a deficient number, since it is larger than the sum of its proper divisors (5799385).

133385303 is an equidigital number, since it uses as much as digits as its factorization.

133385303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5799384.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 133385303 is about 11549.2555171318. The cubic root of 133385303 is about 510.9393210502.

The spelling of 133385303 in words is "one hundred thirty-three million, three hundred eighty-five thousand, three hundred three".