9715231 has 2 divisors, whose sum is σ = 9715232. Its totient is φ = 9715230.

The previous prime is 9715219. The next prime is 9715241. The reversal of 9715231 is 1325179.

It is a strong prime.

It is an emirp because it is prime and its reverse (1325179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9715231 - 2⁷ = 9715103 is a prime.

It is a super-2 number, since 2×9715231² = 188771426766722, 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 9715231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9715241) 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 as a sum of consecutive naturals, namely, 4857615 + 4857616.

It is an arithmetic number, because the mean of its divisors is an integer number (4857616).

Almost surely, 2^9715231 is an apocalyptic number.

9715231 is a deficient number, since it is larger than the sum of its proper divisors (1).

9715231 is an equidigital number, since it uses as much as digits as its factorization.

9715231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 28.

The square root of 9715231 is about 3116.9265310559. The cubic root of 9715231 is about 213.3786896292.

The spelling of 9715231 in words is "nine million, seven hundred fifteen thousand, two hundred thirty-one".