228719417281 has 2 divisors, whose sum is σ = 228719417282. Its totient is φ = 228719417280.

The previous prime is 228719417249. The next prime is 228719417299. The reversal of 228719417281 is 182714917822.

It is a happy number.

228719417281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176413440256 + 52305977025 = 420016^2 + 228705^2 .

It is a cyclic number.

It is not a de Polignac number, because 228719417281 - 2⁵ = 228719417249 is a prime.

It is a super-3 number, since 3×228719417281³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (228719417231) 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, 114359708640 + 114359708641.

It is an arithmetic number, because the mean of its divisors is an integer number (114359708641).

Almost surely, 2^228719417281 is an apocalyptic number.

It is an amenable number.

228719417281 is a deficient number, since it is larger than the sum of its proper divisors (1).

228719417281 is an equidigital number, since it uses as much as digits as its factorization.

228719417281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 52.

The spelling of 228719417281 in words is "two hundred twenty-eight billion, seven hundred nineteen million, four hundred seventeen thousand, two hundred eighty-one".