23505013 has 8 divisors (see below), whose sum is σ = 27518400. Its totient is φ = 19655520.

The previous prime is 23504983. The next prime is 23505059. The reversal of 23505013 is 31050532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23505013 - 2⁵ = 23504981 is a prime.

It is a super-2 number, since 2×23505013² = 1104971272260338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23505073) 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 7 ways as a sum of consecutive naturals, for example, 40663 + ... + 41236.

It is an arithmetic number, because the mean of its divisors is an integer number (3439800).

Almost surely, 2^23505013 is an apocalyptic number.

It is an amenable number.

23505013 is a deficient number, since it is larger than the sum of its proper divisors (4013387).

23505013 is an equidigital number, since it uses as much as digits as its factorization.

23505013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81947.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 23505013 is about 4848.1968813158. The cubic root of 23505013 is about 286.4530815454.

Adding to 23505013 its reverse (31050532), we get a palindrome (54555545).

The spelling of 23505013 in words is "twenty-three million, five hundred five thousand, thirteen".