133820133 has 16 divisors (see below), whose sum is σ = 182327040. Its totient is φ = 87284736.

The previous prime is 133820129. The next prime is 133820143. The reversal of 133820133 is 331028331.

It is not a de Polignac number, because 133820133 - 2² = 133820129 is a prime.

It is a super-2 number, since 2×133820133² = 35815655992275378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133820143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23316 + ... + 28482.

It is an arithmetic number, because the mean of its divisors is an integer number (11395440).

Almost surely, 2^133820133 is an apocalyptic number.

It is an amenable number.

133820133 is a deficient number, since it is larger than the sum of its proper divisors (48506907).

133820133 is an equidigital number, since it uses as much as digits as its factorization.

133820133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 133820133 is about 11568.0652228452. The cubic root of 133820133 is about 511.4939317732.

Adding to 133820133 its reverse (331028331), we get a palindrome (464848464).

The spelling of 133820133 in words is "one hundred thirty-three million, eight hundred twenty thousand, one hundred thirty-three".