228321144047 has 4 divisors (see below), whose sum is σ = 234491985816. Its totient is φ = 222150302280.

The previous prime is 228321144043. The next prime is 228321144053. The reversal of 228321144047 is 740441123822.

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 228321144047 - 2² = 228321144043 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 228321144047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228321144043) 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, 3085420829 + ... + 3085420902.

It is an arithmetic number, because the mean of its divisors is an integer number (58622996454).

Almost surely, 2^228321144047 is an apocalyptic number.

228321144047 is a deficient number, since it is larger than the sum of its proper divisors (6170841769).

228321144047 is an equidigital number, since it uses as much as digits as its factorization.

228321144047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6170841768.

The product of its (nonzero) digits is 86016, while the sum is 38.

Adding to 228321144047 its reverse (740441123822), we get a palindrome (968762267869).

The spelling of 228321144047 in words is "two hundred twenty-eight billion, three hundred twenty-one million, one hundred forty-four thousand, forty-seven".