228728291347 has 2 divisors, whose sum is σ = 228728291348. Its totient is φ = 228728291346.

The previous prime is 228728291269. The next prime is 228728291357. The reversal of 228728291347 is 743192827822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228728291347 - 2¹⁵ = 228728258579 is a prime.

It is not a weakly prime, because it can be changed into another prime (228728291357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114364145673 + 114364145674.

It is an arithmetic number, because the mean of its divisors is an integer number (114364145674).

Almost surely, 2^228728291347 is an apocalyptic number.

228728291347 is a deficient number, since it is larger than the sum of its proper divisors (1).

228728291347 is an equidigital number, since it uses as much as digits as its factorization.

228728291347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5419008, while the sum is 55.

The spelling of 228728291347 in words is "two hundred twenty-eight billion, seven hundred twenty-eight million, two hundred ninety-one thousand, three hundred forty-seven".