211131011 has 16 divisors (see below), whose sum is σ = 260198400. Its totient is φ = 166827168.

The previous prime is 211130993. The next prime is 211131013. The reversal of 211131011 is 110131112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211131011 - 2¹⁴ = 211114627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211130983 and 211131001.

It is not an unprimeable number, because it can be changed into a prime (211131013) 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 in 15 ways as a sum of consecutive naturals, for example, 119150 + ... + 120908.

It is an arithmetic number, because the mean of its divisors is an integer number (16262400).

Almost surely, 2^211131011 is an apocalyptic number.

211131011 is a deficient number, since it is larger than the sum of its proper divisors (49067389).

211131011 is a wasteful number, since it uses less digits than its factorization.

211131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3098.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 211131011 is about 14530.3479311405. The cubic root of 211131011 is about 595.4573711866.

Adding to 211131011 its reverse (110131112), we get a palindrome (321262123).

The spelling of 211131011 in words is "two hundred eleven million, one hundred thirty-one thousand, eleven".