897134042281 has 2 divisors, whose sum is σ = 897134042282. Its totient is φ = 897134042280.

The previous prime is 897134042263. The next prime is 897134042293. The reversal of 897134042281 is 182240431798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 834511482256 + 62622560025 = 913516^2 + 250245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897134042281 is a prime.

It is a super-2 number, since 2×897134042281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (897134082281) 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, 448567021140 + 448567021141.

It is an arithmetic number, because the mean of its divisors is an integer number (448567021141).

Almost surely, 2^897134042281 is an apocalyptic number.

It is an amenable number.

897134042281 is a deficient number, since it is larger than the sum of its proper divisors (1).

897134042281 is an equidigital number, since it uses as much as digits as its factorization.

897134042281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 897134042281 in words is "eight hundred ninety-seven billion, one hundred thirty-four million, forty-two thousand, two hundred eighty-one".