340323120209 has 2 divisors, whose sum is σ = 340323120210. Its totient is φ = 340323120208.

The previous prime is 340323120161. The next prime is 340323120217. The reversal of 340323120209 is 902021323043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302082144400 + 38240975809 = 549620^2 + 195553^2 .

It is an emirp because it is prime and its reverse (902021323043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340323120209 is a prime.

It is a super-2 number, since 2×340323120209² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340323120289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170161560104 + 170161560105.

It is an arithmetic number, because the mean of its divisors is an integer number (170161560105).

Almost surely, 2^340323120209 is an apocalyptic number.

It is an amenable number.

340323120209 is a deficient number, since it is larger than the sum of its proper divisors (1).

340323120209 is an equidigital number, since it uses as much as digits as its factorization.

340323120209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 340323120209 in words is "three hundred forty billion, three hundred twenty-three million, one hundred twenty thousand, two hundred nine".