9871331 has 2 divisors, whose sum is σ = 9871332. Its totient is φ = 9871330.

The previous prime is 9871327. The next prime is 9871357. The reversal of 9871331 is 1331789.

It is a weak prime.

It is an emirp because it is prime and its reverse (1331789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9871331 - 2² = 9871327 is a prime.

It is a super-2 number, since 2×9871331² = 194886351423122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9871321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4935665 + 4935666.

It is an arithmetic number, because the mean of its divisors is an integer number (4935666).

Almost surely, 2^9871331 is an apocalyptic number.

9871331 is a deficient number, since it is larger than the sum of its proper divisors (1).

9871331 is an equidigital number, since it uses as much as digits as its factorization.

9871331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 9871331 is about 3141.8674383239. The cubic root of 9871331 is about 214.5154474379.

The spelling of 9871331 in words is "nine million, eight hundred seventy-one thousand, three hundred thirty-one".