211316887 has 2 divisors, whose sum is σ = 211316888. Its totient is φ = 211316886.

The previous prime is 211316873. The next prime is 211316891. The reversal of 211316887 is 788613112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211316887 - 2²³ = 202928279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211316827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105658443 + 105658444.

It is an arithmetic number, because the mean of its divisors is an integer number (105658444).

Almost surely, 2^211316887 is an apocalyptic number.

211316887 is a deficient number, since it is larger than the sum of its proper divisors (1).

211316887 is an equidigital number, since it uses as much as digits as its factorization.

211316887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 37.

The square root of 211316887 is about 14536.7426543913. The cubic root of 211316887 is about 595.6320633033.

Adding to 211316887 its reverse (788613112), we get a palindrome (999929999).

The spelling of 211316887 in words is "two hundred eleven million, three hundred sixteen thousand, eight hundred eighty-seven".