213311431211 has 2 divisors, whose sum is σ = 213311431212. Its totient is φ = 213311431210.

The previous prime is 213311431141. The next prime is 213311431247. The reversal of 213311431211 is 112134113312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213311431211 - 2²² = 213307236907 is a prime.

It is not a weakly prime, because it can be changed into another prime (213311431261) 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, 106655715605 + 106655715606.

It is an arithmetic number, because the mean of its divisors is an integer number (106655715606).

Almost surely, 2^213311431211 is an apocalyptic number.

213311431211 is a deficient number, since it is larger than the sum of its proper divisors (1).

213311431211 is an equidigital number, since it uses as much as digits as its factorization.

213311431211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

Adding to 213311431211 its reverse (112134113312), we get a palindrome (325445544523).

The spelling of 213311431211 in words is "two hundred thirteen billion, three hundred eleven million, four hundred thirty-one thousand, two hundred eleven".