281223305263 has 2 divisors, whose sum is σ = 281223305264. Its totient is φ = 281223305262.

The previous prime is 281223305249. The next prime is 281223305323. The reversal of 281223305263 is 362503322182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 281223305263 - 2⁹ = 281223304751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281223305563) 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, 140611652631 + 140611652632.

It is an arithmetic number, because the mean of its divisors is an integer number (140611652632).

Almost surely, 2^281223305263 is an apocalyptic number.

281223305263 is a deficient number, since it is larger than the sum of its proper divisors (1).

281223305263 is an equidigital number, since it uses as much as digits as its factorization.

281223305263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 281223305263 in words is "two hundred eighty-one billion, two hundred twenty-three million, three hundred five thousand, two hundred sixty-three".