9887916231 has 12 divisors (see below), whose sum is σ = 14315689440. Its totient is φ = 6576647040.

The previous prime is 9887916187. The next prime is 9887916289. The reversal of 9887916231 is 1326197889.

9887916231 is a `hidden beast` number, since 9 + 8 + 8 + 7 + 9 + 1 + 623 + 1 = 666.

9887916231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9887916231 - 2¹⁵ = 9887883463 is a prime.

It is a super-2 number, since 2×9887916231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9887917231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1270666 + ... + 1278423.

It is an arithmetic number, because the mean of its divisors is an integer number (1192974120).

Almost surely, 2^9887916231 is an apocalyptic number.

9887916231 is a deficient number, since it is larger than the sum of its proper divisors (4427773209).

9887916231 is a wasteful number, since it uses less digits than its factorization.

9887916231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549526 (or 2549523 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 9887916231 is about 99438.0019459361. The cubic root of 9887916231 is about 2146.3551897227.

The spelling of 9887916231 in words is "nine billion, eight hundred eighty-seven million, nine hundred sixteen thousand, two hundred thirty-one".