281054113217 has 2 divisors, whose sum is σ = 281054113218. Its totient is φ = 281054113216.

The previous prime is 281054113201. The next prime is 281054113247. The reversal of 281054113217 is 712311450182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277980963121 + 3073150096 = 527239^2 + 55436^2 .

It is a cyclic number.

It is not a de Polignac number, because 281054113217 - 2⁴ = 281054113201 is a prime.

It is not a weakly prime, because it can be changed into another prime (281054113247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140527056608 + 140527056609.

It is an arithmetic number, because the mean of its divisors is an integer number (140527056609).

Almost surely, 2^281054113217 is an apocalyptic number.

It is an amenable number.

281054113217 is a deficient number, since it is larger than the sum of its proper divisors (1).

281054113217 is an equidigital number, since it uses as much as digits as its factorization.

281054113217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 35.

Adding to 281054113217 its reverse (712311450182), we get a palindrome (993365563399).

The spelling of 281054113217 in words is "two hundred eighty-one billion, fifty-four million, one hundred thirteen thousand, two hundred seventeen".