340981717 has 2 divisors, whose sum is σ = 340981718. Its totient is φ = 340981716.

The previous prime is 340981691. The next prime is 340981723. The reversal of 340981717 is 717189043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195272676 + 145709041 = 13974^2 + 12071^2 .

It is an emirp because it is prime and its reverse (717189043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340981717 - 2²³ = 332593109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340981717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340981727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170490858 + 170490859.

It is an arithmetic number, because the mean of its divisors is an integer number (170490859).

Almost surely, 2^340981717 is an apocalyptic number.

It is an amenable number.

340981717 is a deficient number, since it is larger than the sum of its proper divisors (1).

340981717 is an equidigital number, since it uses as much as digits as its factorization.

340981717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 340981717 is about 18465.6902660041. The cubic root of 340981717 is about 698.6243165600.

The spelling of 340981717 in words is "three hundred forty million, nine hundred eighty-one thousand, seven hundred seventeen".