233213231311 has 4 divisors (see below), whose sum is σ = 233278323712. Its totient is φ = 233148138912.

The previous prime is 233213231297. The next prime is 233213231323. The reversal of 233213231311 is 113132312332.

233213231311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 233213231311 - 2²¹ = 233211134159 is a prime.

It is a super-2 number, since 2×233213231311² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233213231011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32540826 + ... + 32547991.

It is an arithmetic number, because the mean of its divisors is an integer number (58319580928).

Almost surely, 2^233213231311 is an apocalyptic number.

233213231311 is a deficient number, since it is larger than the sum of its proper divisors (65092401).

233213231311 is an equidigital number, since it uses as much as digits as its factorization.

233213231311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65092400.

The product of its digits is 1944, while the sum is 25.

Adding to 233213231311 its reverse (113132312332), we get a palindrome (346345543643).

The spelling of 233213231311 in words is "two hundred thirty-three billion, two hundred thirteen million, two hundred thirty-one thousand, three hundred eleven".