9916231 has 12 divisors (see below), whose sum is σ = 11072152. Its totient is φ = 8828064.

The previous prime is 9916229. The next prime is 9916237. The reversal of 9916231 is 1326199.

It is not a de Polignac number, because 9916231 - 2¹ = 9916229 is a prime.

It is a super-2 number, since 2×9916231² = 196663274490722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 9916193 and 9916202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9916237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10480 + ... + 11386.

Almost surely, 2^9916231 is an apocalyptic number.

9916231 is a deficient number, since it is larger than the sum of its proper divisors (1155921).

9916231 is a wasteful number, since it uses less digits than its factorization.

9916231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 949 counting only the distinct ones).

The product of its digits is 2916, while the sum is 31.

The square root of 9916231 is about 3149.0047634134. The cubic root of 9916231 is about 214.8401985436.

The spelling of 9916231 in words is "nine million, nine hundred sixteen thousand, two hundred thirty-one".