340220497 has 2 divisors, whose sum is σ = 340220498. Its totient is φ = 340220496.

The previous prime is 340220477. The next prime is 340220509. The reversal of 340220497 is 794022043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329204736 + 11015761 = 18144^2 + 3319^2 .

It is a cyclic number.

It is not a de Polignac number, because 340220497 - 2¹¹ = 340218449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340220417) 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, 170110248 + 170110249.

It is an arithmetic number, because the mean of its divisors is an integer number (170110249).

Almost surely, 2^340220497 is an apocalyptic number.

It is an amenable number.

340220497 is a deficient number, since it is larger than the sum of its proper divisors (1).

340220497 is an equidigital number, since it uses as much as digits as its factorization.

340220497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 340220497 is about 18445.0670099081. The cubic root of 340220497 is about 698.1040510942.

The spelling of 340220497 in words is "three hundred forty million, two hundred twenty thousand, four hundred ninety-seven".