9640338231 has 8 divisors (see below), whose sum is σ = 12860165104. Its totient is φ = 6423701760.

The previous prime is 9640338229. The next prime is 9640338247. The reversal of 9640338231 is 1328330469.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9640338231 - 2¹ = 9640338229 is a prime.

It is a super-2 number, since 2×9640338231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9640338231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640338031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790540 + ... + 802641.

It is an arithmetic number, because the mean of its divisors is an integer number (1607520638).

Almost surely, 2^9640338231 is an apocalyptic number.

9640338231 is a deficient number, since it is larger than the sum of its proper divisors (3219826873).

9640338231 is a wasteful number, since it uses less digits than its factorization.

9640338231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595201.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 9640338231 is about 98185.2240971115. The cubic root of 9640338231 is about 2128.2897680453.

The spelling of 9640338231 in words is "nine billion, six hundred forty million, three hundred thirty-eight thousand, two hundred thirty-one".