343565641 has 2 divisors, whose sum is σ = 343565642. Its totient is φ = 343565640.

The previous prime is 343565633. The next prime is 343565659. The reversal of 343565641 is 146565343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249766416 + 93799225 = 15804^2 + 9685^2 .

It is an emirp because it is prime and its reverse (146565343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343565641 - 2³ = 343565633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343565641.

It is not a weakly prime, because it can be changed into another prime (343565611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171782820 + 171782821.

It is an arithmetic number, because the mean of its divisors is an integer number (171782821).

Almost surely, 2^343565641 is an apocalyptic number.

It is an amenable number.

343565641 is a deficient number, since it is larger than the sum of its proper divisors (1).

343565641 is an equidigital number, since it uses as much as digits as its factorization.

343565641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 37.

The square root of 343565641 is about 18535.5237584483. The cubic root of 343565641 is about 700.3845784707.

The spelling of 343565641 in words is "three hundred forty-three million, five hundred sixty-five thousand, six hundred forty-one".