211371887231 has 2 divisors, whose sum is σ = 211371887232. Its totient is φ = 211371887230.

The previous prime is 211371887171. The next prime is 211371887281. The reversal of 211371887231 is 132788173112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211371887231 - 2¹⁴ = 211371870847 is a prime.

It is a super-2 number, since 2×211371887231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211371887281) 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, 105685943615 + 105685943616.

It is an arithmetic number, because the mean of its divisors is an integer number (105685943616).

Almost surely, 2^211371887231 is an apocalyptic number.

211371887231 is a deficient number, since it is larger than the sum of its proper divisors (1).

211371887231 is an equidigital number, since it uses as much as digits as its factorization.

211371887231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 44.

The spelling of 211371887231 in words is "two hundred eleven billion, three hundred seventy-one million, eight hundred eighty-seven thousand, two hundred thirty-one".