228518113 has 2 divisors, whose sum is σ = 228518114. Its totient is φ = 228518112.

The previous prime is 228518107. The next prime is 228518117. The reversal of 228518113 is 311815822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199713424 + 28804689 = 14132^2 + 5367^2 .

It is a cyclic number.

It is not a de Polignac number, because 228518113 - 2¹⁷ = 228387041 is a prime.

It is not a weakly prime, because it can be changed into another prime (228518117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114259056 + 114259057.

It is an arithmetic number, because the mean of its divisors is an integer number (114259057).

Almost surely, 2^228518113 is an apocalyptic number.

It is an amenable number.

228518113 is a deficient number, since it is larger than the sum of its proper divisors (1).

228518113 is an equidigital number, since it uses as much as digits as its factorization.

228518113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 31.

The square root of 228518113 is about 15116.8155707477. The cubic root of 228518113 is about 611.3738746074.

The spelling of 228518113 in words is "two hundred twenty-eight million, five hundred eighteen thousand, one hundred thirteen".