133116133 has 4 divisors (see below), whose sum is σ = 133228908. Its totient is φ = 133003360.

The previous prime is 133116131. The next prime is 133116149. The reversal of 133116133 is 331611331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331611331 = 15383 ⋅21557.

It can be written as a sum of positive squares in 2 ways, for example, as 112848129 + 20268004 = 10623^2 + 4502^2 .

It is a cyclic number.

It is not a de Polignac number, because 133116133 - 2¹ = 133116131 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 (133116131) 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, 54598 + ... + 56983.

It is an arithmetic number, because the mean of its divisors is an integer number (33307227).

Almost surely, 2^133116133 is an apocalyptic number.

It is an amenable number.

133116133 is a deficient number, since it is larger than the sum of its proper divisors (112775).

133116133 is a wasteful number, since it uses less digits than its factorization.

133116133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112774.

The product of its digits is 486, while the sum is 22.

The square root of 133116133 is about 11537.5965001381. The cubic root of 133116133 is about 510.5953997215.

Adding to 133116133 its reverse (331611331), we get a palindrome (464727464).

The spelling of 133116133 in words is "one hundred thirty-three million, one hundred sixteen thousand, one hundred thirty-three".