305320075349 has 2 divisors, whose sum is σ = 305320075350. Its totient is φ = 305320075348.

The previous prime is 305320075301. The next prime is 305320075351. The reversal of 305320075349 is 943570023503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162394492324 + 142925583025 = 402982^2 + 378055^2 .

It is an emirp because it is prime and its reverse (943570023503) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 305320075349 - 2¹² = 305320071253 is a prime.

It is a super-2 number, since 2×305320075349² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 305320075351, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305320075649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152660037674 + 152660037675.

It is an arithmetic number, because the mean of its divisors is an integer number (152660037675).

Almost surely, 2^305320075349 is an apocalyptic number.

It is an amenable number.

305320075349 is a deficient number, since it is larger than the sum of its proper divisors (1).

305320075349 is an equidigital number, since it uses as much as digits as its factorization.

305320075349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 41.

The spelling of 305320075349 in words is "three hundred five billion, three hundred twenty million, seventy-five thousand, three hundred forty-nine".