231224234213 has 4 divisors (see below), whose sum is σ = 264256267680. Its totient is φ = 198192200748.

The previous prime is 231224234207. The next prime is 231224234233. The reversal of 231224234213 is 312432422132.

231224234213 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 231224234213 - 2¹⁶ = 231224168677 is a prime.

It is a super-3 number, since 3×231224234213³ (a number of 35 digits) contains 333 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 (231224234233) 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, 16516016723 + ... + 16516016736.

It is an arithmetic number, because the mean of its divisors is an integer number (66064066920).

Almost surely, 2^231224234213 is an apocalyptic number.

It is an amenable number.

231224234213 is a deficient number, since it is larger than the sum of its proper divisors (33032033467).

231224234213 is an equidigital number, since it uses as much as digits as its factorization.

231224234213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33032033466.

The product of its digits is 13824, while the sum is 29.

Adding to 231224234213 its reverse (312432422132), we get a palindrome (543656656345).

The spelling of 231224234213 in words is "two hundred thirty-one billion, two hundred twenty-four million, two hundred thirty-four thousand, two hundred thirteen".