23728531903 has 8 divisors (see below), whose sum is σ = 24499238400. Its totient is φ = 22958154840.

The previous prime is 23728531837. The next prime is 23728531909. The reversal of 23728531903 is 30913582732.

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

It is a de Polignac number, because none of the positive numbers 2^k-23728531903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23728531903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23728531909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68448 + ... + 228346.

It is an arithmetic number, because the mean of its divisors is an integer number (3062404800).

Almost surely, 2^23728531903 is an apocalyptic number.

23728531903 is a deficient number, since it is larger than the sum of its proper divisors (770706497).

23728531903 is a wasteful number, since it uses less digits than its factorization.

23728531903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164717.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 23728531903 in words is "twenty-three billion, seven hundred twenty-eight million, five hundred thirty-one thousand, nine hundred three".