340043443 has 2 divisors, whose sum is σ = 340043444. Its totient is φ = 340043442.

The previous prime is 340043423. The next prime is 340043471. The reversal of 340043443 is 344340043.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340043443 - 2⁹ = 340042931 is a prime.

It is not a weakly prime, because it can be changed into another prime (340043423) 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, 170021721 + 170021722.

It is an arithmetic number, because the mean of its divisors is an integer number (170021722).

Almost surely, 2^340043443 is an apocalyptic number.

340043443 is a deficient number, since it is larger than the sum of its proper divisors (1).

340043443 is an equidigital number, since it uses as much as digits as its factorization.

340043443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 340043443 is about 18440.2668906933. The cubic root of 340043443 is about 697.9829300730.

Adding to 340043443 its reverse (344340043), we get a palindrome (684383486).

The spelling of 340043443 in words is "three hundred forty million, forty-three thousand, four hundred forty-three".