23423065513 has 4 divisors (see below), whose sum is σ = 23433538500. Its totient is φ = 23412592528.

The previous prime is 23423065487. The next prime is 23423065543. The reversal of 23423065513 is 31556032432.

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 18882057744 + 4541007769 = 137412^2 + 67387^2 .

It is a cyclic number.

It is not a de Polignac number, because 23423065513 - 2²⁹ = 22886194601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23423065543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5233138 + ... + 5237611.

It is an arithmetic number, because the mean of its divisors is an integer number (5858384625).

Almost surely, 2^23423065513 is an apocalyptic number.

It is an amenable number.

23423065513 is a deficient number, since it is larger than the sum of its proper divisors (10472987).

23423065513 is a wasteful number, since it uses less digits than its factorization.

23423065513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10472986.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 23423065513 its reverse (31556032432), we get a palindrome (54979097945).

The spelling of 23423065513 in words is "twenty-three billion, four hundred twenty-three million, sixty-five thousand, five hundred thirteen".