211331013 has 16 divisors (see below), whose sum is σ = 291493440. Its totient is φ = 136083456.

The previous prime is 211331011. The next prime is 211331051. The reversal of 211331013 is 310133112.

211331013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211331013 - 2¹ = 211331011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211330983 and 211331001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211331011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8581 + ... + 22277.

It is an arithmetic number, because the mean of its divisors is an integer number (18218340).

Almost surely, 2^211331013 is an apocalyptic number.

It is an amenable number.

211331013 is a deficient number, since it is larger than the sum of its proper divisors (80162427).

211331013 is a wasteful number, since it uses less digits than its factorization.

211331013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13876.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 211331013 is about 14537.2285185313. The cubic root of 211331013 is about 595.6453351737.

Adding to 211331013 its reverse (310133112), we get a palindrome (521464125).

The spelling of 211331013 in words is "two hundred eleven million, three hundred thirty-one thousand, thirteen".