2321345665 has 8 divisors (see below), whose sum is σ = 2949474600. Its totient is φ = 1747836672.

The previous prime is 2321345657. The next prime is 2321345671. The reversal of 2321345665 is 5665431232.

It can be written as a sum of positive squares in 4 ways, for example, as 458473744 + 1862871921 = 21412^2 + 43161^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2321345665 - 2³ = 2321345657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13654890 + ... + 13655059.

It is an arithmetic number, because the mean of its divisors is an integer number (368684325).

Almost surely, 2^2321345665 is an apocalyptic number.

It is an amenable number.

2321345665 is a deficient number, since it is larger than the sum of its proper divisors (628128935).

2321345665 is a wasteful number, since it uses less digits than its factorization.

2321345665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27309971.

The product of its digits is 129600, while the sum is 37.

The square root of 2321345665 is about 48180.3452146205. The cubic root of 2321345665 is about 1324.0770912615.

Adding to 2321345665 its reverse (5665431232), we get a palindrome (7986776897).

The spelling of 2321345665 in words is "two billion, three hundred twenty-one million, three hundred forty-five thousand, six hundred sixty-five".