343408861 has 2 divisors, whose sum is σ = 343408862. Its totient is φ = 343408860.

The previous prime is 343408847. The next prime is 343408909. The reversal of 343408861 is 168804343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343360900 + 47961 = 18530^2 + 219^2 .

It is a cyclic number.

It is not a de Polignac number, because 343408861 - 2⁹ = 343408349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343408861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343408361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171704430 + 171704431.

It is an arithmetic number, because the mean of its divisors is an integer number (171704431).

Almost surely, 2^343408861 is an apocalyptic number.

It is an amenable number.

343408861 is a deficient number, since it is larger than the sum of its proper divisors (1).

343408861 is an equidigital number, since it uses as much as digits as its factorization.

343408861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 343408861 is about 18531.2940994416. The cubic root of 343408861 is about 700.2780262935.

The spelling of 343408861 in words is "three hundred forty-three million, four hundred eight thousand, eight hundred sixty-one".