228035191 has 2 divisors, whose sum is σ = 228035192. Its totient is φ = 228035190.

The previous prime is 228035189. The next prime is 228035221. The reversal of 228035191 is 191530822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228035191 - 2¹ = 228035189 is a prime.

Together with 228035189, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228035111) 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 as a sum of consecutive naturals, namely, 114017595 + 114017596.

It is an arithmetic number, because the mean of its divisors is an integer number (114017596).

Almost surely, 2^228035191 is an apocalyptic number.

228035191 is a deficient number, since it is larger than the sum of its proper divisors (1).

228035191 is an equidigital number, since it uses as much as digits as its factorization.

228035191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 228035191 is about 15100.8341160348. The cubic root of 228035191 is about 610.9429034929.

The spelling of 228035191 in words is "two hundred twenty-eight million, thirty-five thousand, one hundred ninety-one".