23123304065 has 4 divisors (see below), whose sum is σ = 27747964884. Its totient is φ = 18498643248.

The previous prime is 23123304059. The next prime is 23123304101. The reversal of 23123304065 is 56040332132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3771433744 + 19351870321 = 61412^2 + 139111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23123304065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312330402 + ... + 2312330411.

It is an arithmetic number, because the mean of its divisors is an integer number (6936991221).

Almost surely, 2^23123304065 is an apocalyptic number.

It is an amenable number.

23123304065 is a deficient number, since it is larger than the sum of its proper divisors (4624660819).

23123304065 is an equidigital number, since it uses as much as digits as its factorization.

23123304065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624660818.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 23123304065 its reverse (56040332132), we get a palindrome (79163636197).

The spelling of 23123304065 in words is "twenty-three billion, one hundred twenty-three million, three hundred four thousand, sixty-five".