343809886417897 has 2 divisors, whose sum is σ = 343809886417898. Its totient is φ = 343809886417896.

The previous prime is 343809886417859. The next prime is 343809886417927. The reversal of 343809886417897 is 798714688908343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333974016801936 + 9835869615961 = 18274956^2 + 3136219^2 .

It is an emirp because it is prime and its reverse (798714688908343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343809886417897 - 2⁷ = 343809886417769 is a prime.

It is not a weakly prime, because it can be changed into another prime (343809886817897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171904943208948 + 171904943208949.

It is an arithmetic number, because the mean of its divisors is an integer number (171904943208949).

Almost surely, 2^{343809886417897} is an apocalyptic number.

It is an amenable number.

343809886417897 is a deficient number, since it is larger than the sum of its proper divisors (1).

343809886417897 is an equidigital number, since it uses as much as digits as its factorization.

343809886417897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14046068736, while the sum is 85.

The spelling of 343809886417897 in words is "three hundred forty-three trillion, eight hundred nine billion, eight hundred eighty-six million, four hundred seventeen thousand, eight hundred ninety-seven".