281662131017 has 2 divisors, whose sum is σ = 281662131018. Its totient is φ = 281662131016.

The previous prime is 281662130989. The next prime is 281662131083. The reversal of 281662131017 is 710131266182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215137341241 + 66524789776 = 463829^2 + 257924^2 .

It is a cyclic number.

It is not a de Polignac number, because 281662131017 - 2¹⁰ = 281662129993 is a prime.

It is not a weakly prime, because it can be changed into another prime (281662731017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140831065508 + 140831065509.

It is an arithmetic number, because the mean of its divisors is an integer number (140831065509).

Almost surely, 2^281662131017 is an apocalyptic number.

It is an amenable number.

281662131017 is a deficient number, since it is larger than the sum of its proper divisors (1).

281662131017 is an equidigital number, since it uses as much as digits as its factorization.

281662131017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

Adding to 281662131017 its reverse (710131266182), we get a palindrome (991793397199).

The spelling of 281662131017 in words is "two hundred eighty-one billion, six hundred sixty-two million, one hundred thirty-one thousand, seventeen".