231022243 has 2 divisors, whose sum is σ = 231022244. Its totient is φ = 231022242.

The previous prime is 231022223. The next prime is 231022277. The reversal of 231022243 is 342220132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231022243 - 2⁹ = 231021731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231022243.

It is not a weakly prime, because it can be changed into another prime (231022223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115511121 + 115511122.

It is an arithmetic number, because the mean of its divisors is an integer number (115511122).

Almost surely, 2^231022243 is an apocalyptic number.

231022243 is a deficient number, since it is larger than the sum of its proper divisors (1).

231022243 is an equidigital number, since it uses as much as digits as its factorization.

231022243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 231022243 is about 15199.4158769342. The cubic root of 231022243 is about 613.5989371914.

Adding to 231022243 its reverse (342220132), we get a palindrome (573242375).

The spelling of 231022243 in words is "two hundred thirty-one million, twenty-two thousand, two hundred forty-three".