231322323223217 has 2 divisors, whose sum is σ = 231322323223218. Its totient is φ = 231322323223216.

The previous prime is 231322323223183. The next prime is 231322323223249. The reversal of 231322323223217 is 712322323223132.

231322323223217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148333302374656 + 82989020848561 = 12179216^2 + 9109831^2 .

It is a cyclic number.

It is not a de Polignac number, because 231322323223217 - 2¹² = 231322323219121 is a prime.

It is not a weakly prime, because it can be changed into another prime (231322323222217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661161611608 + 115661161611609.

It is an arithmetic number, because the mean of its divisors is an integer number (115661161611609).

Almost surely, 2^{231322323223217} is an apocalyptic number.

It is an amenable number.

231322323223217 is a deficient number, since it is larger than the sum of its proper divisors (1).

231322323223217 is an equidigital number, since it uses as much as digits as its factorization.

231322323223217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 38.

Adding to 231322323223217 its reverse (712322323223132), we get a palindrome (943644646446349).

The spelling of 231322323223217 in words is "two hundred thirty-one trillion, three hundred twenty-two billion, three hundred twenty-three million, two hundred twenty-three thousand, two hundred seventeen".