9115231 has 4 divisors (see below), whose sum is σ = 9595000. Its totient is φ = 8635464.

The previous prime is 9115229. The next prime is 9115237. The reversal of 9115231 is 1325119.

9115231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9115231 - 2¹ = 9115229 is a prime.

It is a super-2 number, since 2×9115231² = 166174872366722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9115237) 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 3 ways as a sum of consecutive naturals, for example, 239856 + ... + 239893.

It is an arithmetic number, because the mean of its divisors is an integer number (2398750).

Almost surely, 2^9115231 is an apocalyptic number.

9115231 is a deficient number, since it is larger than the sum of its proper divisors (479769).

9115231 is a wasteful number, since it uses less digits than its factorization.

9115231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479768.

The product of its digits is 270, while the sum is 22.

The square root of 9115231 is about 3019.1440840079. The cubic root of 9115231 is about 208.8923615669.

The spelling of 9115231 in words is "nine million, one hundred fifteen thousand, two hundred thirty-one".