231113243 has 2 divisors, whose sum is σ = 231113244. Its totient is φ = 231113242.

The previous prime is 231113237. The next prime is 231113257. The reversal of 231113243 is 342311132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231113243 - 2¹² = 231109147 is a prime.

It is not a weakly prime, because it can be changed into another prime (231113273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115556621 + 115556622.

It is an arithmetic number, because the mean of its divisors is an integer number (115556622).

Almost surely, 2^231113243 is an apocalyptic number.

231113243 is a deficient number, since it is larger than the sum of its proper divisors (1).

231113243 is an equidigital number, since it uses as much as digits as its factorization.

231113243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 20.

The square root of 231113243 is about 15202.4091182944. The cubic root of 231113243 is about 613.6794924555.

Adding to 231113243 its reverse (342311132), we get a palindrome (573424375).

The spelling of 231113243 in words is "two hundred thirty-one million, one hundred thirteen thousand, two hundred forty-three".