133304137 has 2 divisors, whose sum is σ = 133304138. Its totient is φ = 133304136.

The previous prime is 133304117. The next prime is 133304167. The reversal of 133304137 is 731403331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129709321 + 3594816 = 11389^2 + 1896^2 .

It is a cyclic number.

It is not a de Polignac number, because 133304137 - 2⁷ = 133304009 is a prime.

It is not a weakly prime, because it can be changed into another prime (133304117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66652068 + 66652069.

It is an arithmetic number, because the mean of its divisors is an integer number (66652069).

Almost surely, 2^133304137 is an apocalyptic number.

It is an amenable number.

133304137 is a deficient number, since it is larger than the sum of its proper divisors (1).

133304137 is an equidigital number, since it uses as much as digits as its factorization.

133304137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 133304137 is about 11545.7410762584. The cubic root of 133304137 is about 510.8356631642.

Adding to 133304137 its reverse (731403331), we get a palindrome (864707468).

The spelling of 133304137 in words is "one hundred thirty-three million, three hundred four thousand, one hundred thirty-seven".