340204211 has 4 divisors (see below), whose sum is σ = 340312800. Its totient is φ = 340095624.

The previous prime is 340204181. The next prime is 340204223. The reversal of 340204211 is 112402043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340204211 - 2¹⁸ = 339942067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340204211.

It is not an unprimeable number, because it can be changed into a prime (340204411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49451 + ... + 55908.

It is an arithmetic number, because the mean of its divisors is an integer number (85078200).

Almost surely, 2^340204211 is an apocalyptic number.

340204211 is a deficient number, since it is larger than the sum of its proper divisors (108589).

340204211 is a wasteful number, since it uses less digits than its factorization.

340204211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108588.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 340204211 is about 18444.6255315742. The cubic root of 340204211 is about 698.0929117458.

Adding to 340204211 its reverse (112402043), we get a palindrome (452606254).

The spelling of 340204211 in words is "three hundred forty million, two hundred four thousand, two hundred eleven".