23015013305 has 4 divisors (see below), whose sum is σ = 27618015972. Its totient is φ = 18412010640.

The previous prime is 23015013277. The next prime is 23015013331. The reversal of 23015013305 is 50331051032.

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 3726247849 + 19288765456 = 61043^2 + 138884^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23015013305 is a prime.

It is a Duffinian number.

It is a Curzon 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, 2301501326 + ... + 2301501335.

It is an arithmetic number, because the mean of its divisors is an integer number (6904503993).

Almost surely, 2^23015013305 is an apocalyptic number.

It is an amenable number.

23015013305 is a deficient number, since it is larger than the sum of its proper divisors (4603002667).

23015013305 is an equidigital number, since it uses as much as digits as its factorization.

23015013305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603002666.

The product of its (nonzero) digits is 1350, while the sum is 23.

Adding to 23015013305 its reverse (50331051032), we get a palindrome (73346064337).

The spelling of 23015013305 in words is "twenty-three billion, fifteen million, thirteen thousand, three hundred five".