213443344311 has 8 divisors (see below), whose sum is σ = 284593292784. Its totient is φ = 142294479360.

The previous prime is 213443344273. The next prime is 213443344381. The reversal of 213443344311 is 113443344312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213443344311 - 2⁷ = 213443344183 is a prime.

It is a super-2 number, since 2×213443344311² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213443344381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512005 + ... + 830081.

It is an arithmetic number, because the mean of its divisors is an integer number (35574161598).

Almost surely, 2^213443344311 is an apocalyptic number.

213443344311 is a deficient number, since it is larger than the sum of its proper divisors (71149948473).

213443344311 is a wasteful number, since it uses less digits than its factorization.

213443344311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541761.

The product of its digits is 41472, while the sum is 33.

Adding to 213443344311 its reverse (113443344312), we get a palindrome (326886688623).

Subtracting from 213443344311 its reverse (113443344312), we obtain a palindrome (99999999999).

The spelling of 213443344311 in words is "two hundred thirteen billion, four hundred forty-three million, three hundred forty-four thousand, three hundred eleven".