228340571 has 2 divisors, whose sum is σ = 228340572. Its totient is φ = 228340570.

The previous prime is 228340517. The next prime is 228340631. The reversal of 228340571 is 175043822.

Together with previous prime (228340517) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228340571 - 2²² = 224146267 is a prime.

It is not a weakly prime, because it can be changed into another prime (228340501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114170285 + 114170286.

It is an arithmetic number, because the mean of its divisors is an integer number (114170286).

Almost surely, 2^228340571 is an apocalyptic number.

228340571 is a deficient number, since it is larger than the sum of its proper divisors (1).

228340571 is an equidigital number, since it uses as much as digits as its factorization.

228340571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 228340571 is about 15110.9420950515. The cubic root of 228340571 is about 611.2155025327.

The spelling of 228340571 in words is "two hundred twenty-eight million, three hundred forty thousand, five hundred seventy-one".