343327681 has 2 divisors, whose sum is σ = 343327682. Its totient is φ = 343327680.

The previous prime is 343327679. The next prime is 343327709. The reversal of 343327681 is 186723343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296528400 + 46799281 = 17220^2 + 6841^2 .

It is a cyclic number.

It is not a de Polignac number, because 343327681 - 2¹ = 343327679 is a prime.

It is a super-2 number, since 2×343327681² = 235747793081675522, which contains 22 as substring.

Together with 343327679, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343327681.

It is not a weakly prime, because it can be changed into another prime (343327661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171663840 + 171663841.

It is an arithmetic number, because the mean of its divisors is an integer number (171663841).

Almost surely, 2^343327681 is an apocalyptic number.

It is an amenable number.

343327681 is a deficient number, since it is larger than the sum of its proper divisors (1).

343327681 is an equidigital number, since it uses as much as digits as its factorization.

343327681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 37.

The square root of 343327681 is about 18529.1036210606. The cubic root of 343327681 is about 700.2228412970. Note that the first 3 decimals are identical.

The spelling of 343327681 in words is "three hundred forty-three million, three hundred twenty-seven thousand, six hundred eighty-one".