8831281 has 2 divisors, whose sum is σ = 8831282. Its totient is φ = 8831280.

The previous prime is 8831269. The next prime is 8831299. The reversal of 8831281 is 1821388.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4665600 + 4165681 = 2160^2 + 2041^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8831281 is a prime.

It is a super-2 number, since 2×8831281² = 155983048201922, which contains 22 as substring.

8831281 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8831201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4415640 + 4415641.

It is an arithmetic number, because the mean of its divisors is an integer number (4415641).

Almost surely, 2^8831281 is an apocalyptic number.

It is an amenable number.

8831281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8831281 is an equidigital number, since it uses as much as digits as its factorization.

8831281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 31.

The square root of 8831281 is about 2971.7471292154. The cubic root of 8831281 is about 206.7003607337.

The spelling of 8831281 in words is "eight million, eight hundred thirty-one thousand, two hundred eighty-one".