211301031105 has 20 divisors (see below), whose sum is σ = 378776663892. Its totient is φ = 112693883040.

The previous prime is 211301031101. The next prime is 211301031107. The reversal of 211301031105 is 501130103112.

It can be written as a sum of positive squares in 2 ways, for example, as 36377169984 + 174923861121 = 190728^2 + 418239^2 .

It is not a de Polignac number, because 211301031105 - 2² = 211301031101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211301031101) 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 in 19 ways as a sum of consecutive naturals, for example, 260865066 + ... + 260865875.

Almost surely, 2^211301031105 is an apocalyptic number.

It is an amenable number.

211301031105 is a deficient number, since it is larger than the sum of its proper divisors (167475632787).

211301031105 is an equidigital number, since it uses as much as digits as its factorization.

211301031105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521730958 (or 521730949 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

Adding to 211301031105 its reverse (501130103112), we get a palindrome (712431134217).

The spelling of 211301031105 in words is "two hundred eleven billion, three hundred one million, thirty-one thousand, one hundred five".