23623013 has 4 divisors (see below), whose sum is σ = 25012620. Its totient is φ = 22233408.

The previous prime is 23622997. The next prime is 23623027. The reversal of 23623013 is 31032632.

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 6466849 + 17156164 = 2543^2 + 4142^2 .

It is a cyclic number.

It is not a de Polignac number, because 23623013 - 2⁴ = 23622997 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 (23623063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694778 + ... + 694811.

It is an arithmetic number, because the mean of its divisors is an integer number (6253155).

Almost surely, 2^23623013 is an apocalyptic number.

It is an amenable number.

23623013 is a deficient number, since it is larger than the sum of its proper divisors (1389607).

23623013 is a wasteful number, since it uses less digits than its factorization.

23623013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389606.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 23623013 is about 4860.3511190036. The cubic root of 23623013 is about 286.9316327580.

Adding to 23623013 its reverse (31032632), we get a palindrome (54655645).

The spelling of 23623013 in words is "twenty-three million, six hundred twenty-three thousand, thirteen".