231112243 has 2 divisors, whose sum is σ = 231112244. Its totient is φ = 231112242.

The previous prime is 231112237. The next prime is 231112267. The reversal of 231112243 is 342211132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231112243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231112243.

It is not a weakly prime, because it can be changed into another prime (231112213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115556121 + 115556122.

It is an arithmetic number, because the mean of its divisors is an integer number (115556122).

Almost surely, 2^231112243 is an apocalyptic number.

231112243 is a deficient number, since it is larger than the sum of its proper divisors (1).

231112243 is an equidigital number, since it uses as much as digits as its factorization.

231112243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 231112243 is about 15202.3762287348. The cubic root of 231112243 is about 613.6786073478.

Adding to 231112243 its reverse (342211132), we get a palindrome (573323375).

The spelling of 231112243 in words is "two hundred thirty-one million, one hundred twelve thousand, two hundred forty-three".