231563982337 has 2 divisors, whose sum is σ = 231563982338. Its totient is φ = 231563982336.

The previous prime is 231563982289. The next prime is 231563982431. The reversal of 231563982337 is 733289365132.

231563982337 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229210180081 + 2353802256 = 478759^2 + 48516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231563982337 is a prime.

It is not a weakly prime, because it can be changed into another prime (231563982137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115781991168 + 115781991169.

It is an arithmetic number, because the mean of its divisors is an integer number (115781991169).

Almost surely, 2^231563982337 is an apocalyptic number.

It is an amenable number.

231563982337 is a deficient number, since it is larger than the sum of its proper divisors (1).

231563982337 is an equidigital number, since it uses as much as digits as its factorization.

231563982337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 52.

The spelling of 231563982337 in words is "two hundred thirty-one billion, five hundred sixty-three million, nine hundred eighty-two thousand, three hundred thirty-seven".