211423340239 has 2 divisors, whose sum is σ = 211423340240. Its totient is φ = 211423340238.

The previous prime is 211423340201. The next prime is 211423340257. The reversal of 211423340239 is 932043324112.

211423340239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211423340239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211423340279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105711670119 + 105711670120.

It is an arithmetic number, because the mean of its divisors is an integer number (105711670120).

Almost surely, 2^211423340239 is an apocalyptic number.

211423340239 is a deficient number, since it is larger than the sum of its proper divisors (1).

211423340239 is an equidigital number, since it uses as much as digits as its factorization.

211423340239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 211423340239 in words is "two hundred eleven billion, four hundred twenty-three million, three hundred forty thousand, two hundred thirty-nine".