211210131311 has 2 divisors, whose sum is σ = 211210131312. Its totient is φ = 211210131310.

The previous prime is 211210131259. The next prime is 211210131329. The reversal of 211210131311 is 113131012112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211210131311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211210131311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211210131331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605065655 + 105605065656.

It is an arithmetic number, because the mean of its divisors is an integer number (105605065656).

Almost surely, 2^211210131311 is an apocalyptic number.

211210131311 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210131311 is an equidigital number, since it uses as much as digits as its factorization.

211210131311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 211210131311 its reverse (113131012112), we get a palindrome (324341143423).

It can be divided in two parts, 2112101 and 31311, that added together give a palindrome (2143412).

The spelling of 211210131311 in words is "two hundred eleven billion, two hundred ten million, one hundred thirty-one thousand, three hundred eleven".