133788133 has 4 divisors (see below), whose sum is σ = 133812000. Its totient is φ = 133764268.

The previous prime is 133788091. The next prime is 133788163. The reversal of 133788133 is 331887331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133788133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133788092 and 133788101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133788163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1566 + ... + 16432.

It is an arithmetic number, because the mean of its divisors is an integer number (33453000).

Almost surely, 2^133788133 is an apocalyptic number.

It is an amenable number.

133788133 is a deficient number, since it is larger than the sum of its proper divisors (23867).

133788133 is an equidigital number, since it uses as much as digits as its factorization.

133788133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23866.

The product of its digits is 36288, while the sum is 37.

The square root of 133788133 is about 11566.6820220839. The cubic root of 133788133 is about 511.4531578620.

The spelling of 133788133 in words is "one hundred thirty-three million, seven hundred eighty-eight thousand, one hundred thirty-three".