340003243 has 2 divisors, whose sum is σ = 340003244. Its totient is φ = 340003242.

The previous prime is 340003231. The next prime is 340003259. The reversal of 340003243 is 342300043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340003243 - 2⁵ = 340003211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340003243.

It is not a weakly prime, because it can be changed into another prime (340003343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170001621 + 170001622.

It is an arithmetic number, because the mean of its divisors is an integer number (170001622).

Almost surely, 2^340003243 is an apocalyptic number.

340003243 is a deficient number, since it is larger than the sum of its proper divisors (1).

340003243 is an equidigital number, since it uses as much as digits as its factorization.

340003243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 340003243 is about 18439.1768525604. The cubic root of 340003243 is about 697.9554237645.

Adding to 340003243 its reverse (342300043), we get a palindrome (682303286).

The spelling of 340003243 in words is "three hundred forty million, three thousand, two hundred forty-three".