23317013 has 4 divisors (see below), whose sum is σ = 24688620. Its totient is φ = 21945408.

The previous prime is 23316983. The next prime is 23317027. The reversal of 23317013 is 31071332.

It is a happy number.

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 19864849 + 3452164 = 4457^2 + 1858^2 .

It is a cyclic number.

It is not a de Polignac number, because 23317013 - 2⁶ = 23316949 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 (23317033) 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, 685778 + ... + 685811.

It is an arithmetic number, because the mean of its divisors is an integer number (6172155).

Almost surely, 2^23317013 is an apocalyptic number.

It is an amenable number.

23317013 is a deficient number, since it is larger than the sum of its proper divisors (1371607).

23317013 is a wasteful number, since it uses less digits than its factorization.

23317013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371606.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 23317013 is about 4828.7693049058. The cubic root of 23317013 is about 285.6873243487.

Adding to 23317013 its reverse (31071332), we get a palindrome (54388345).

The spelling of 23317013 in words is "twenty-three million, three hundred seventeen thousand, thirteen".