8873631281 has 2 divisors, whose sum is σ = 8873631282. Its totient is φ = 8873631280.

The previous prime is 8873631269. The next prime is 8873631293. The reversal of 8873631281 is 1821363788.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (8873631269) and next prime (8873631293).

It can be written as a sum of positive squares in only one way, i.e., 7312986256 + 1560645025 = 85516^2 + 39505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8873631281 is a prime.

It is a super-2 number, since 2×8873631281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8873631241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4436815640 + 4436815641.

It is an arithmetic number, because the mean of its divisors is an integer number (4436815641).

Almost surely, 2^8873631281 is an apocalyptic number.

8873631281 is the 42128-th centered decagonal number.

It is an amenable number.

8873631281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8873631281 is an equidigital number, since it uses as much as digits as its factorization.

8873631281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 47.

The square root of 8873631281 is about 94199.9537207954. The cubic root of 8873631281 is about 2070.3024351375.

The spelling of 8873631281 in words is "eight billion, eight hundred seventy-three million, six hundred thirty-one thousand, two hundred eighty-one".