9665226231 has 4 divisors (see below), whose sum is σ = 12886968312. Its totient is φ = 6443484152.

The previous prime is 9665226167. The next prime is 9665226293. The reversal of 9665226231 is 1326225669.

It is a happy number.

9665226231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9665226231 - 2⁶ = 9665226167 is a prime.

It is a super-2 number, since 2×9665226231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9665226031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1610871036 + ... + 1610871041.

It is an arithmetic number, because the mean of its divisors is an integer number (3221742078).

Almost surely, 2^9665226231 is an apocalyptic number.

9665226231 is a deficient number, since it is larger than the sum of its proper divisors (3221742081).

9665226231 is a wasteful number, since it uses less digits than its factorization.

9665226231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221742080.

The product of its digits is 233280, while the sum is 42.

The square root of 9665226231 is about 98311.8824506987. The cubic root of 9665226231 is about 2130.1196954932.

The spelling of 9665226231 in words is "nine billion, six hundred sixty-five million, two hundred twenty-six thousand, two hundred thirty-one".