228219912823 has 8 divisors (see below), whose sum is σ = 265743942048. Its totient is φ = 191926179744.

The previous prime is 228219912793. The next prime is 228219912829. The reversal of 228219912823 is 328219912822.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228219912823 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 (228219912829) 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, 307573636 + ... + 307574377.

It is an arithmetic number, because the mean of its divisors is an integer number (33217992756).

Almost surely, 2^228219912823 is an apocalyptic number.

228219912823 is a deficient number, since it is larger than the sum of its proper divisors (37524029225).

228219912823 is an equidigital number, since it uses as much as digits as its factorization.

228219912823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615148073.

The product of its digits is 497664, while the sum is 49.

Subtracting 228219912823 from its reverse (328219912822), we obtain a palindrome (99999999999).

The spelling of 228219912823 in words is "two hundred twenty-eight billion, two hundred nineteen million, nine hundred twelve thousand, eight hundred twenty-three".