9173231 has 2 divisors, whose sum is σ = 9173232. Its totient is φ = 9173230.

The previous prime is 9173209. The next prime is 9173237. The reversal of 9173231 is 1323719.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9173231 - 2¹⁸ = 8911087 is a prime.

It is a super-2 number, since 2×9173231² = 168296333958722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9173231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9173237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4586615 + 4586616.

It is an arithmetic number, because the mean of its divisors is an integer number (4586616).

Almost surely, 2^9173231 is an apocalyptic number.

9173231 is a deficient number, since it is larger than the sum of its proper divisors (1).

9173231 is an equidigital number, since it uses as much as digits as its factorization.

9173231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 26.

The square root of 9173231 is about 3028.7342240613. The cubic root of 9173231 is about 209.3344842076.

The spelling of 9173231 in words is "nine million, one hundred seventy-three thousand, two hundred thirty-one".