9001231 has 8 divisors (see below), whose sum is σ = 9521280. Its totient is φ = 8485848.

The previous prime is 9001229. The next prime is 9001243. The reversal of 9001231 is 1321009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9001231 - 2¹ = 9001229 is a prime.

It is a super-2 number, since 2×9001231² = 162044319030722, which contains 22 as substring.

9001231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9004231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3270 + ... + 5356.

It is an arithmetic number, because the mean of its divisors is an integer number (1190160).

Almost surely, 2^9001231 is an apocalyptic number.

9001231 is a deficient number, since it is larger than the sum of its proper divisors (520049).

9001231 is a wasteful number, since it uses less digits than its factorization.

9001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 9001231 is about 3000.2051596516. The cubic root of 9001231 is about 208.0178655143.

The spelling of 9001231 in words is "nine million, one thousand, two hundred thirty-one".