340030349 has 2 divisors, whose sum is σ = 340030350. Its totient is φ = 340030348.

The previous prime is 340030331. The next prime is 340030357. The reversal of 340030349 is 943030043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335146249 + 4884100 = 18307^2 + 2210^2 .

It is a cyclic number.

It is not a de Polignac number, because 340030349 - 2¹⁶ = 339964813 is a prime.

It is a Sophie Germain 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 (340030399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170015174 + 170015175.

It is an arithmetic number, because the mean of its divisors is an integer number (170015175).

Almost surely, 2^340030349 is an apocalyptic number.

It is an amenable number.

340030349 is a deficient number, since it is larger than the sum of its proper divisors (1).

340030349 is an equidigital number, since it uses as much as digits as its factorization.

340030349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 340030349 is about 18439.9118490301. The cubic root of 340030349 is about 697.9739709179.

The spelling of 340030349 in words is "three hundred forty million, thirty thousand, three hundred forty-nine".