340440341 has 2 divisors, whose sum is σ = 340440342. Its totient is φ = 340440340.

The previous prime is 340440337. The next prime is 340440349. The reversal of 340440341 is 143044043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250588900 + 89851441 = 15830^2 + 9479^2 .

It is an emirp because it is prime and its reverse (143044043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340440341 - 2² = 340440337 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340440349) 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, 170220170 + 170220171.

It is an arithmetic number, because the mean of its divisors is an integer number (170220171).

Almost surely, 2^340440341 is an apocalyptic number.

It is an amenable number.

340440341 is a deficient number, since it is larger than the sum of its proper divisors (1).

340440341 is an equidigital number, since it uses as much as digits as its factorization.

340440341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 340440341 is about 18451.0254728565. The cubic root of 340440341 is about 698.2543858946.

Adding to 340440341 its reverse (143044043), we get a palindrome (483484384).

The spelling of 340440341 in words is "three hundred forty million, four hundred forty thousand, three hundred forty-one".