340387211 has 2 divisors, whose sum is σ = 340387212. Its totient is φ = 340387210.

The previous prime is 340387193. The next prime is 340387213. The reversal of 340387211 is 112783043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340387211 - 2¹⁸ = 340125067 is a prime.

Together with 340387213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340387213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170193605 + 170193606.

It is an arithmetic number, because the mean of its divisors is an integer number (170193606).

Almost surely, 2^340387211 is an apocalyptic number.

340387211 is a deficient number, since it is larger than the sum of its proper divisors (1).

340387211 is an equidigital number, since it uses as much as digits as its factorization.

340387211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 340387211 is about 18449.5856593041. The cubic root of 340387211 is about 698.2180602098.

The spelling of 340387211 in words is "three hundred forty million, three hundred eighty-seven thousand, two hundred eleven".