213313211331 has 16 divisors (see below), whose sum is σ = 310603534848. Its totient is φ = 129143328800.

The previous prime is 213313211227. The next prime is 213313211387. The reversal of 213313211331 is 133112313312.

It is a cyclic number.

It is not a de Polignac number, because 213313211331 - 2⁷ = 213313211203 is a prime.

It is a super-2 number, since 2×213313211331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213313218331) 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, 3403611 + ... + 3465716.

It is an arithmetic number, because the mean of its divisors is an integer number (19412720928).

Almost surely, 2^213313211331 is an apocalyptic number.

213313211331 is a deficient number, since it is larger than the sum of its proper divisors (97290323517).

213313211331 is a wasteful number, since it uses less digits than its factorization.

213313211331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870282.

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

Adding to 213313211331 its reverse (133112313312), we get a palindrome (346425524643).

The spelling of 213313211331 in words is "two hundred thirteen billion, three hundred thirteen million, two hundred eleven thousand, three hundred thirty-one".