233131312213 has 4 divisors (see below), whose sum is σ = 233135764000. Its totient is φ = 233126860428.

The previous prime is 233131312181. The next prime is 233131312229. The reversal of 233131312213 is 312213131332.

233131312213 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 233131312213 - 2⁵ = 233131312181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233131312313) 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, 2146395 + ... + 2252392.

It is an arithmetic number, because the mean of its divisors is an integer number (58283941000).

Almost surely, 2^233131312213 is an apocalyptic number.

It is an amenable number.

233131312213 is a deficient number, since it is larger than the sum of its proper divisors (4451787).

233131312213 is an equidigital number, since it uses as much as digits as its factorization.

233131312213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4451786.

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

Adding to 233131312213 its reverse (312213131332), we get a palindrome (545344443545).

The spelling of 233131312213 in words is "two hundred thirty-three billion, one hundred thirty-one million, three hundred twelve thousand, two hundred thirteen".