133171307 has 2 divisors, whose sum is σ = 133171308. Its totient is φ = 133171306.

The previous prime is 133171289. The next prime is 133171309. The reversal of 133171307 is 703171331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133171307 - 2¹⁰ = 133170283 is a prime.

Together with 133171309, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133171309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66585653 + 66585654.

It is an arithmetic number, because the mean of its divisors is an integer number (66585654).

Almost surely, 2^133171307 is an apocalyptic number.

133171307 is a deficient number, since it is larger than the sum of its proper divisors (1).

133171307 is an equidigital number, since it uses as much as digits as its factorization.

133171307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1323, while the sum is 26.

The square root of 133171307 is about 11539.9873050190. The cubic root of 133171307 is about 510.6659338700.

The spelling of 133171307 in words is "one hundred thirty-three million, one hundred seventy-one thousand, three hundred seven".