340297117 has 2 divisors, whose sum is σ = 340297118. Its totient is φ = 340297116.

The previous prime is 340297099. The next prime is 340297123. The reversal of 340297117 is 711792043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333464121 + 6832996 = 18261^2 + 2614^2 .

It is an emirp because it is prime and its reverse (711792043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340297117 - 2⁷ = 340296989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340297147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170148558 + 170148559.

It is an arithmetic number, because the mean of its divisors is an integer number (170148559).

Almost surely, 2^340297117 is an apocalyptic number.

It is an amenable number.

340297117 is a deficient number, since it is larger than the sum of its proper divisors (1).

340297117 is an equidigital number, since it uses as much as digits as its factorization.

340297117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 340297117 is about 18447.1438710712. The cubic root of 340297117 is about 698.1564531080.

The spelling of 340297117 in words is "three hundred forty million, two hundred ninety-seven thousand, one hundred seventeen".