211331331213 has 16 divisors (see below), whose sum is σ = 283122040320. Its totient is φ = 140214461184.

The previous prime is 211331331199. The next prime is 211331331223. The reversal of 211331331213 is 312133133112.

It is not a de Polignac number, because 211331331213 - 2¹² = 211331327117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211331331223) 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, 2316145 + ... + 2405657.

It is an arithmetic number, because the mean of its divisors is an integer number (17695127520).

Almost surely, 2^211331331213 is an apocalyptic number.

It is an amenable number.

211331331213 is a deficient number, since it is larger than the sum of its proper divisors (71790709107).

211331331213 is a wasteful number, since it uses less digits than its factorization.

211331331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93268.

The product of its digits is 972, while the sum is 24.

Adding to 211331331213 its reverse (312133133112), we get a palindrome (523464464325).

The spelling of 211331331213 in words is "two hundred eleven billion, three hundred thirty-one million, three hundred thirty-one thousand, two hundred thirteen".