231220233122317 has 2 divisors, whose sum is σ = 231220233122318. Its totient is φ = 231220233122316.

The previous prime is 231220233122303. The next prime is 231220233122323. The reversal of 231220233122317 is 713221332022132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229059174359401 + 2161058762916 = 15134701^2 + 1470054^2 .

It is a cyclic number.

It is not a de Polignac number, because 231220233122317 - 2⁴³ = 222424140100109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231220233125317) 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 as a sum of consecutive naturals, namely, 115610116561158 + 115610116561159.

It is an arithmetic number, because the mean of its divisors is an integer number (115610116561159).

Almost surely, 2^{231220233122317} is an apocalyptic number.

It is an amenable number.

231220233122317 is a deficient number, since it is larger than the sum of its proper divisors (1).

231220233122317 is an equidigital number, since it uses as much as digits as its factorization.

231220233122317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 34.

Adding to 231220233122317 its reverse (713221332022132), we get a palindrome (944441565144449).

The spelling of 231220233122317 in words is "two hundred thirty-one trillion, two hundred twenty billion, two hundred thirty-three million, one hundred twenty-two thousand, three hundred seventeen".