9120231 has 24 divisors (see below), whose sum is σ = 13779584. Its totient is φ = 5806080.

The previous prime is 9120217. The next prime is 9120233. The reversal of 9120231 is 1320219.

It is a happy number.

It is not a de Polignac number, because 9120231 - 2⁷ = 9120103 is a prime.

It is a super-2 number, since 2×9120231² = 166357226986722, which contains 22 as substring.

It is a Duffinian number.

9120231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9120233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26895 + ... + 27231.

Almost surely, 2^9120231 is an apocalyptic number.

9120231 is a deficient number, since it is larger than the sum of its proper divisors (4659353).

9120231 is a wasteful number, since it uses less digits than its factorization.

9120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 9120231 is about 3019.9720197379. The cubic root of 9120231 is about 208.9305493316.

The spelling of 9120231 in words is "nine million, one hundred twenty thousand, two hundred thirty-one".