305700349 has 2 divisors, whose sum is σ = 305700350. Its totient is φ = 305700348.

The previous prime is 305700323. The next prime is 305700377. The reversal of 305700349 is 943007503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185096025 + 120604324 = 13605^2 + 10982^2 .

It is a cyclic number.

It is not a de Polignac number, because 305700349 - 2¹⁵ = 305667581 is a prime.

It is a super-4 number, since 4×305700349⁴ (a number of 35 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 305700349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305700319) 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, 152850174 + 152850175.

It is an arithmetic number, because the mean of its divisors is an integer number (152850175).

Almost surely, 2^305700349 is an apocalyptic number.

It is an amenable number.

305700349 is a deficient number, since it is larger than the sum of its proper divisors (1).

305700349 is an equidigital number, since it uses as much as digits as its factorization.

305700349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 305700349 is about 17484.2886329413. The cubic root of 305700349 is about 673.6463766478.

The spelling of 305700349 in words is "three hundred five million, seven hundred thousand, three hundred forty-nine".