23617983 has 4 divisors (see below), whose sum is σ = 31490648. Its totient is φ = 15745320.

The previous prime is 23617961. The next prime is 23617991. The reversal of 23617983 is 38971632.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23617983 - 2²¹ = 21520831 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 (23617943) 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, 3936328 + ... + 3936333.

It is an arithmetic number, because the mean of its divisors is an integer number (7872662).

Almost surely, 2^23617983 is an apocalyptic number.

23617983 is a deficient number, since it is larger than the sum of its proper divisors (7872665).

23617983 is an equidigital number, since it uses as much as digits as its factorization.

23617983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7872664.

The product of its digits is 54432, while the sum is 39.

The square root of 23617983 is about 4859.8336391280. The cubic root of 23617983 is about 286.9112660565.

The spelling of 23617983 in words is "twenty-three million, six hundred seventeen thousand, nine hundred eighty-three".