343840111 has 2 divisors, whose sum is σ = 343840112. Its totient is φ = 343840110.

The previous prime is 343840099. The next prime is 343840139. The reversal of 343840111 is 111048343.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343840111 - 2⁷ = 343839983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343840711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171920055 + 171920056.

It is an arithmetic number, because the mean of its divisors is an integer number (171920056).

Almost surely, 2^343840111 is an apocalyptic number.

343840111 is a deficient number, since it is larger than the sum of its proper divisors (1).

343840111 is an equidigital number, since it uses as much as digits as its factorization.

343840111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 343840111 is about 18542.9261714542. The cubic root of 343840111 is about 700.5710381199.

Adding to 343840111 its reverse (111048343), we get a palindrome (454888454).

The spelling of 343840111 in words is "three hundred forty-three million, eight hundred forty thousand, one hundred eleven".