23613013 has 4 divisors (see below), whose sum is σ = 23687820. Its totient is φ = 23538208.

The previous prime is 23612999. The next prime is 23613053. The reversal of 23613013 is 31031632.

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 7436529 + 16176484 = 2727^2 + 4022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23613013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23613053) 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, 36928 + ... + 37561.

It is an arithmetic number, because the mean of its divisors is an integer number (5921955).

Almost surely, 2^23613013 is an apocalyptic number.

It is an amenable number.

23613013 is a deficient number, since it is larger than the sum of its proper divisors (74807).

23613013 is an equidigital number, since it uses as much as digits as its factorization.

23613013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74806.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 23613013 is about 4859.3222778490. The cubic root of 23613013 is about 286.8911394574.

Adding to 23613013 its reverse (31031632), we get a palindrome (54644645).

The spelling of 23613013 in words is "twenty-three million, six hundred thirteen thousand, thirteen".