23842513 has 4 divisors (see below), whose sum is σ = 24879168. Its totient is φ = 22805860.

The previous prime is 23842501. The next prime is 23842537. The reversal of 23842513 is 31524832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23842513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23842213) 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, 518293 + ... + 518338.

It is an arithmetic number, because the mean of its divisors is an integer number (6219792).

Almost surely, 2^23842513 is an apocalyptic number.

23842513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23842513 is a deficient number, since it is larger than the sum of its proper divisors (1036655).

23842513 is a wasteful number, since it uses less digits than its factorization.

23842513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036654.

The product of its digits is 5760, while the sum is 28.

The square root of 23842513 is about 4882.8795807392. The cubic root of 23842513 is about 287.8175968525.

The spelling of 23842513 in words is "twenty-three million, eight hundred forty-two thousand, five hundred thirteen".