133503183 has 12 divisors (see below), whose sum is σ = 210368808. Its totient is φ = 80910960.

The previous prime is 133503173. The next prime is 133503191. The reversal of 133503183 is 381305331.

It is not a de Polignac number, because 133503183 - 2⁶ = 133503119 is a prime.

It is a super-2 number, since 2×133503183² = 35646199742262978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133503163) 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 11 ways as a sum of consecutive naturals, for example, 674160 + ... + 674357.

It is an arithmetic number, because the mean of its divisors is an integer number (17530734).

Almost surely, 2^133503183 is an apocalyptic number.

133503183 is a deficient number, since it is larger than the sum of its proper divisors (76865625).

133503183 is a wasteful number, since it uses less digits than its factorization.

133503183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348534 (or 1348531 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 133503183 is about 11554.3577493515. The cubic root of 133503183 is about 511.0897918836.

The spelling of 133503183 in words is "one hundred thirty-three million, five hundred three thousand, one hundred eighty-three".