343144309 has 2 divisors, whose sum is σ = 343144310. Its totient is φ = 343144308.

The previous prime is 343144283. The next prime is 343144331. The reversal of 343144309 is 903441343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292307409 + 50836900 = 17097^2 + 7130^2 .

It is a cyclic number.

It is not a de Polignac number, because 343144309 - 2⁷ = 343144181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343144379) 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, 171572154 + 171572155.

It is an arithmetic number, because the mean of its divisors is an integer number (171572155).

Almost surely, 2^343144309 is an apocalyptic number.

It is an amenable number.

343144309 is a deficient number, since it is larger than the sum of its proper divisors (1).

343144309 is an equidigital number, since it uses as much as digits as its factorization.

343144309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 343144309 is about 18524.1547445491. The cubic root of 343144309 is about 700.0981556235.

The spelling of 343144309 in words is "three hundred forty-three million, one hundred forty-four thousand, three hundred nine".