133040309 has 2 divisors, whose sum is σ = 133040310. Its totient is φ = 133040308.

The previous prime is 133040279. The next prime is 133040321. The reversal of 133040309 is 903040331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121330225 + 11710084 = 11015^2 + 3422^2 .

It is an emirp because it is prime and its reverse (903040331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133040309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133040399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66520154 + 66520155.

It is an arithmetic number, because the mean of its divisors is an integer number (66520155).

Almost surely, 2^133040309 is an apocalyptic number.

It is an amenable number.

133040309 is a deficient number, since it is larger than the sum of its proper divisors (1).

133040309 is an equidigital number, since it uses as much as digits as its factorization.

133040309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 133040309 is about 11534.3100790641. The cubic root of 133040309 is about 510.4984349186.

The spelling of 133040309 in words is "one hundred thirty-three million, forty thousand, three hundred nine".