133128319 has 2 divisors, whose sum is σ = 133128320. Its totient is φ = 133128318.

The previous prime is 133128253. The next prime is 133128389. The reversal of 133128319 is 913821331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133128319 - 2²¹ = 131031167 is a prime.

It is a super-2 number, since 2×133128319² = 35446298639531522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133128389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66564159 + 66564160.

It is an arithmetic number, because the mean of its divisors is an integer number (66564160).

Almost surely, 2^133128319 is an apocalyptic number.

133128319 is a deficient number, since it is larger than the sum of its proper divisors (1).

133128319 is an equidigital number, since it uses as much as digits as its factorization.

133128319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 133128319 is about 11538.1245876442. The cubic root of 133128319 is about 510.6109799159.

The spelling of 133128319 in words is "one hundred thirty-three million, one hundred twenty-eight thousand, three hundred nineteen".