28331613383 has 4 divisors (see below), whose sum is σ = 28811810280. Its totient is φ = 27851416488.

The previous prime is 28331613353. The next prime is 28331613421. The reversal of 28331613383 is 38331613382.

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

It is a cyclic number.

It is not a de Polignac number, because 28331613383 - 2²⁴ = 28314836167 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 28331613383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28331613353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240098360 + ... + 240098477.

It is an arithmetic number, because the mean of its divisors is an integer number (7202952570).

Almost surely, 2^28331613383 is an apocalyptic number.

28331613383 is a deficient number, since it is larger than the sum of its proper divisors (480196897).

28331613383 is an equidigital number, since it uses as much as digits as its factorization.

28331613383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480196896.

The product of its digits is 186624, while the sum is 41.

Subtracting 28331613383 from its reverse (38331613382), we obtain a palindrome (9999999999).

The spelling of 28331613383 in words is "twenty-eight billion, three hundred thirty-one million, six hundred thirteen thousand, three hundred eighty-three".