340140211 has 4 divisors (see below), whose sum is σ = 341368432. Its totient is φ = 338911992.

The previous prime is 340140187. The next prime is 340140287. The reversal of 340140211 is 112041043.

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 340140211 - 2⁷ = 340140083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340140511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613695 + ... + 614248.

It is an arithmetic number, because the mean of its divisors is an integer number (85342108).

Almost surely, 2^340140211 is an apocalyptic number.

340140211 is a deficient number, since it is larger than the sum of its proper divisors (1228221).

340140211 is a wasteful number, since it uses less digits than its factorization.

340140211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228220.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 340140211 is about 18442.8905272465. The cubic root of 340140211 is about 698.0491333848.

Adding to 340140211 its reverse (112041043), we get a palindrome (452181254).

The spelling of 340140211 in words is "three hundred forty million, one hundred forty thousand, two hundred eleven".