211404324247 has 2 divisors, whose sum is σ = 211404324248. Its totient is φ = 211404324246.

The previous prime is 211404324193. The next prime is 211404324251. The reversal of 211404324247 is 742423404112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211404324247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211404394247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105702162123 + 105702162124.

It is an arithmetic number, because the mean of its divisors is an integer number (105702162124).

Almost surely, 2^211404324247 is an apocalyptic number.

211404324247 is a deficient number, since it is larger than the sum of its proper divisors (1).

211404324247 is an equidigital number, since it uses as much as digits as its factorization.

211404324247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 34.

Adding to 211404324247 its reverse (742423404112), we get a palindrome (953827728359).

The spelling of 211404324247 in words is "two hundred eleven billion, four hundred four million, three hundred twenty-four thousand, two hundred forty-seven".