133243307 has 2 divisors, whose sum is σ = 133243308. Its totient is φ = 133243306.

The previous prime is 133243289. The next prime is 133243309. The reversal of 133243307 is 703342331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133243307 - 2¹⁴ = 133226923 is a prime.

Together with 133243309, 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 (133243309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66621653 + 66621654.

It is an arithmetic number, because the mean of its divisors is an integer number (66621654).

Almost surely, 2^133243307 is an apocalyptic number.

133243307 is a deficient number, since it is larger than the sum of its proper divisors (1).

133243307 is an equidigital number, since it uses as much as digits as its factorization.

133243307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 26.

The square root of 133243307 is about 11543.1064709635. The cubic root of 133243307 is about 510.7579489939.

Adding to 133243307 its reverse (703342331), we get a palindrome (836585638).

The spelling of 133243307 in words is "one hundred thirty-three million, two hundred forty-three thousand, three hundred seven".