133803 has 6 divisors (see below), whose sum is σ = 193284. Its totient is φ = 89196.

The previous prime is 133801. The next prime is 133811. The reversal of 133803 is 308331.

It is not a de Polignac number, because 133803 - 2¹ = 133801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7425 + ... + 7442.

It is an arithmetic number, because the mean of its divisors is an integer number (32214).

2¹³³⁸⁰³ is an apocalyptic number.

133803 is a deficient number, since it is larger than the sum of its proper divisors (59481).

133803 is a wasteful number, since it uses less digits than its factorization.

133803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14873 (or 14870 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 133803 is about 365.7909238896. The cubic root of 133803 is about 51.1472101975.

The spelling of 133803 in words is "one hundred thirty-three thousand, eight hundred three".