231112211213 has 12 divisors (see below), whose sum is σ = 250271373888. Its totient is φ = 213322608720.

The previous prime is 231112211203. The next prime is 231112211219. The reversal of 231112211213 is 312112211132.

It is not a de Polignac number, because 231112211213 - 2¹⁴ = 231112194829 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 (231112211219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5161106 + ... + 5205692.

It is an arithmetic number, because the mean of its divisors is an integer number (20855947824).

Almost surely, 2^231112211213 is an apocalyptic number.

It is an amenable number.

231112211213 is a deficient number, since it is larger than the sum of its proper divisors (19159162675).

231112211213 is a wasteful number, since it uses less digits than its factorization.

231112211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75284 (or 75271 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

Adding to 231112211213 its reverse (312112211132), we get a palindrome (543224422345).

The spelling of 231112211213 in words is "two hundred thirty-one billion, one hundred twelve million, two hundred eleven thousand, two hundred thirteen".