281761311241 has 2 divisors, whose sum is σ = 281761311242. Its totient is φ = 281761311240.

The previous prime is 281761311131. The next prime is 281761311257. The reversal of 281761311241 is 142113167182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253940405625 + 27820905616 = 503925^2 + 166796^2 .

It is a cyclic number.

It is not a de Polignac number, because 281761311241 - 2¹⁵ = 281761278473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 281761311241.

It is not a weakly prime, because it can be changed into another prime (281761311641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140880655620 + 140880655621.

It is an arithmetic number, because the mean of its divisors is an integer number (140880655621).

Almost surely, 2^281761311241 is an apocalyptic number.

It is an amenable number.

281761311241 is a deficient number, since it is larger than the sum of its proper divisors (1).

281761311241 is an equidigital number, since it uses as much as digits as its factorization.

281761311241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 37.

The spelling of 281761311241 in words is "two hundred eighty-one billion, seven hundred sixty-one million, three hundred eleven thousand, two hundred forty-one".