133300309 has 2 divisors, whose sum is σ = 133300310. Its totient is φ = 133300308.

The previous prime is 133300303. The next prime is 133300313. The reversal of 133300309 is 903003331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80156209 + 53144100 = 8953^2 + 7290^2 .

It is a cyclic number.

It is not a de Polignac number, because 133300309 - 2¹¹ = 133298261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133300309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133300303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66650154 + 66650155.

It is an arithmetic number, because the mean of its divisors is an integer number (66650155).

Almost surely, 2^133300309 is an apocalyptic number.

It is an amenable number.

133300309 is a deficient number, since it is larger than the sum of its proper divisors (1).

133300309 is an equidigital number, since it uses as much as digits as its factorization.

133300309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 22.

The square root of 133300309 is about 11545.5752996548. The cubic root of 133300309 is about 510.8307733494.

The spelling of 133300309 in words is "one hundred thirty-three million, three hundred thousand, three hundred nine".