9727231 has 2 divisors, whose sum is σ = 9727232. Its totient is φ = 9727230.

The previous prime is 9727219. The next prime is 9727241. The reversal of 9727231 is 1327279.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9727231 - 2⁵ = 9727199 is a prime.

It is a super-2 number, since 2×9727231² = 189238045854722, which contains 22 as substring.

9727231 is a lucky number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 9727193 and 9727202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9727241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4863615 + 4863616.

It is an arithmetic number, because the mean of its divisors is an integer number (4863616).

Almost surely, 2^9727231 is an apocalyptic number.

9727231 is a deficient number, since it is larger than the sum of its proper divisors (1).

9727231 is an equidigital number, since it uses as much as digits as its factorization.

9727231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 31.

The square root of 9727231 is about 3118.8509101911. The cubic root of 9727231 is about 213.4665067472.

The spelling of 9727231 in words is "nine million, seven hundred twenty-seven thousand, two hundred thirty-one".