971281 has 2 divisors, whose sum is σ = 971282. Its totient is φ = 971280.

The previous prime is 971279. The next prime is 971291. The reversal of 971281 is 182179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 968256 + 3025 = 984^2 + 55^2 .

It is an emirp because it is prime and its reverse (182179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 971281 - 2¹ = 971279 is a prime.

It is a super-2 number, since 2×971281² = 1886773561922, which contains 22 as substring.

Together with 971279, it forms a pair of twin primes.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (971251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485640 + 485641.

It is an arithmetic number, because the mean of its divisors is an integer number (485641).

2⁹⁷¹²⁸¹ is an apocalyptic number.

It is an amenable number.

971281 is a deficient number, since it is larger than the sum of its proper divisors (1).

971281 is an equidigital number, since it uses as much as digits as its factorization.

971281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 28.

The square root of 971281 is about 985.5358948308. The cubic root of 971281 is about 99.0333866920.

It can be divided in two parts, 97 and 1281, that added together give a triangular number (1378 = T₅₂).

The spelling of 971281 in words is "nine hundred seventy-one thousand, two hundred eighty-one".