9930231 has 12 divisors (see below), whose sum is σ = 14587560. Its totient is φ = 6507600.

The previous prime is 9930197. The next prime is 9930233. The reversal of 9930231 is 1320399.

It is not a de Polignac number, because 9930231 - 2⁹ = 9929719 is a prime.

It is a super-2 number, since 2×9930231² = 197218975426722, which contains 22 as substring.

9930231 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9930195 and 9930204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9930233) 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, 8820 + ... + 9881.

It is an arithmetic number, because the mean of its divisors is an integer number (1215630).

Almost surely, 2^9930231 is an apocalyptic number.

9930231 is a deficient number, since it is larger than the sum of its proper divisors (4657329).

9930231 is a wasteful number, since it uses less digits than its factorization.

9930231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18766 (or 18763 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 9930231 is about 3151.2269039217. The cubic root of 9930231 is about 214.9412567114.

The spelling of 9930231 in words is "nine million, nine hundred thirty thousand, two hundred thirty-one".