133182209 has 2 divisors, whose sum is σ = 133182210. Its totient is φ = 133182208.

The previous prime is 133182197. The next prime is 133182211. The reversal of 133182209 is 902281331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133171600 + 10609 = 11540^2 + 103^2 .

It is a cyclic number.

It is not a de Polignac number, because 133182209 - 2⁸ = 133181953 is a prime.

Together with 133182211, 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 (133182299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66591104 + 66591105.

It is an arithmetic number, because the mean of its divisors is an integer number (66591105).

Almost surely, 2^133182209 is an apocalyptic number.

It is an amenable number.

133182209 is a deficient number, since it is larger than the sum of its proper divisors (1).

133182209 is an equidigital number, since it uses as much as digits as its factorization.

133182209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 133182209 is about 11540.4596528908. The cubic root of 133182209 is about 510.6798686237.

The spelling of 133182209 in words is "one hundred thirty-three million, one hundred eighty-two thousand, two hundred nine".