211031303111 has 2 divisors, whose sum is σ = 211031303112. Its totient is φ = 211031303110.

The previous prime is 211031303029. The next prime is 211031303141. The reversal of 211031303111 is 111303130112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211031303111 - 2¹⁴ = 211031286727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211031303111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211031303141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105515651555 + 105515651556.

It is an arithmetic number, because the mean of its divisors is an integer number (105515651556).

Almost surely, 2^211031303111 is an apocalyptic number.

211031303111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211031303111 is an equidigital number, since it uses as much as digits as its factorization.

211031303111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 211031303111 its reverse (111303130112), we get a palindrome (322334433223).

The spelling of 211031303111 in words is "two hundred eleven billion, thirty-one million, three hundred three thousand, one hundred eleven".