213123040321311 has 12 divisors (see below), whose sum is σ = 307848062241720. Its totient is φ = 142080332727120.

The previous prime is 213123040321297. The next prime is 213123040321313. The reversal of 213123040321311 is 113123040321312.

213123040321311 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 2 + 30 + 403 + 213 + 11 = 666.

It is not a de Polignac number, because 213123040321311 - 2¹¹ = 213123040319263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213123040321313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140382516 + ... + 141892553.

It is an arithmetic number, because the mean of its divisors is an integer number (25654005186810).

Almost surely, 2^{213123040321311} is an apocalyptic number.

213123040321311 is a deficient number, since it is larger than the sum of its proper divisors (94725021920409).

213123040321311 is a wasteful number, since it uses less digits than its factorization.

213123040321311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282358966 (or 282358963 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 213123040321311 its reverse (113123040321312), we get a palindrome (326246080642623).

Subtracting from 213123040321311 its reverse (113123040321312), we obtain a palindrome (99999999999999).

The spelling of 213123040321311 in words is "two hundred thirteen trillion, one hundred twenty-three billion, forty million, three hundred twenty-one thousand, three hundred eleven".