305385307 has 2 divisors, whose sum is σ = 305385308. Its totient is φ = 305385306.

The previous prime is 305385299. The next prime is 305385349. The reversal of 305385307 is 703583503.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 305385307 - 2³ = 305385299 is a prime.

It is not a weakly prime, because it can be changed into another prime (305385107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152692653 + 152692654.

It is an arithmetic number, because the mean of its divisors is an integer number (152692654).

Almost surely, 2^305385307 is an apocalyptic number.

305385307 is a deficient number, since it is larger than the sum of its proper divisors (1).

305385307 is an equidigital number, since it uses as much as digits as its factorization.

305385307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 305385307 is about 17475.2770221247. The cubic root of 305385307 is about 673.4148865101.

The spelling of 305385307 in words is "three hundred five million, three hundred eighty-five thousand, three hundred seven".