9865231 has 4 divisors (see below), whose sum is σ = 9897264. Its totient is φ = 9833200.

The previous prime is 9865211. The next prime is 9865241. The reversal of 9865231 is 1325689.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1325689 = 53 ⋅25013.

It is a cyclic number.

It is not a de Polignac number, because 9865231 - 2⁹ = 9864719 is a prime.

It is a super-2 number, since 2×9865231² = 194645565366722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9865201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15550 + ... + 16171.

It is an arithmetic number, because the mean of its divisors is an integer number (2474316).

Almost surely, 2^9865231 is an apocalyptic number.

9865231 is a deficient number, since it is larger than the sum of its proper divisors (32033).

9865231 is a wasteful number, since it uses less digits than its factorization.

9865231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32032.

The product of its digits is 12960, while the sum is 34.

The square root of 9865231 is about 3140.8965280633. The cubic root of 9865231 is about 214.4712516464.

The spelling of 9865231 in words is "nine million, eight hundred sixty-five thousand, two hundred thirty-one".