228112187 has 2 divisors, whose sum is σ = 228112188. Its totient is φ = 228112186.

The previous prime is 228112177. The next prime is 228112189. The reversal of 228112187 is 781211822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228112187 - 2⁸ = 228111931 is a prime.

Together with 228112189, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228112189) 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, 114056093 + 114056094.

It is an arithmetic number, because the mean of its divisors is an integer number (114056094).

Almost surely, 2^228112187 is an apocalyptic number.

228112187 is a deficient number, since it is larger than the sum of its proper divisors (1).

228112187 is an equidigital number, since it uses as much as digits as its factorization.

228112187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 32.

The square root of 228112187 is about 15103.3832964671. The cubic root of 228112187 is about 611.0116573056.

The spelling of 228112187 in words is "two hundred twenty-eight million, one hundred twelve thousand, one hundred eighty-seven".