28331813383 has 8 divisors (see below), whose sum is σ = 29103508368. Its totient is φ = 27565246464.

The previous prime is 28331813381. The next prime is 28331813417. The reversal of 28331813383 is 38331813382.

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 28331813383 - 2¹ = 28331813381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28331813381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1270816 + ... + 1292917.

It is an arithmetic number, because the mean of its divisors is an integer number (3637938546).

Almost surely, 2^28331813383 is an apocalyptic number.

28331813383 is a deficient number, since it is larger than the sum of its proper divisors (771694985).

28331813383 is a wasteful number, since it uses less digits than its factorization.

28331813383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564033.

The product of its digits is 248832, while the sum is 43.

Subtracting 28331813383 from its reverse (38331813382), we obtain a palindrome (9999999999).

The spelling of 28331813383 in words is "twenty-eight billion, three hundred thirty-one million, eight hundred thirteen thousand, three hundred eighty-three".