231326632365617 has 2 divisors, whose sum is σ = 231326632365618. Its totient is φ = 231326632365616.

The previous prime is 231326632365539. The next prime is 231326632365671. The reversal of 231326632365617 is 716563236623132.

Together with next prime (231326632365671) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197929895387536 + 33396736978081 = 14068756^2 + 5778991^2 .

It is a cyclic number.

It is not a de Polignac number, because 231326632365617 - 2¹⁶ = 231326632300081 is a prime.

It is not a weakly prime, because it can be changed into another prime (231326632365317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115663316182808 + 115663316182809.

It is an arithmetic number, because the mean of its divisors is an integer number (115663316182809).

Almost surely, 2^{231326632365617} is an apocalyptic number.

It is an amenable number.

231326632365617 is a deficient number, since it is larger than the sum of its proper divisors (1).

231326632365617 is an equidigital number, since it uses as much as digits as its factorization.

231326632365617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29393280, while the sum is 56.

Adding to 231326632365617 its reverse (716563236623132), we get a palindrome (947889868988749).

The spelling of 231326632365617 in words is "two hundred thirty-one trillion, three hundred twenty-six billion, six hundred thirty-two million, three hundred sixty-five thousand, six hundred seventeen".