340811 has 2 divisors, whose sum is σ = 340812. Its totient is φ = 340810.

The previous prime is 340801. The next prime is 340819. The reversal of 340811 is 118043.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (118043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340811 - 2¹⁴ = 324427 is a prime.

It is a Sophie Germain prime.

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 340811.

It is not a weakly prime, because it can be changed into another prime (340819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170405 + 170406.

It is an arithmetic number, because the mean of its divisors is an integer number (170406).

2³⁴⁰⁸¹¹ is an apocalyptic number.

340811 is a deficient number, since it is larger than the sum of its proper divisors (1).

340811 is an equidigital number, since it uses as much as digits as its factorization.

340811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 340811 is about 583.7902020418. The cubic root of 340811 is about 69.8507705267.

Adding to 340811 its reverse (118043), we get a palindrome (458854).

The spelling of 340811 in words is "three hundred forty thousand, eight hundred eleven".