228148117 has 2 divisors, whose sum is σ = 228148118. Its totient is φ = 228148116.

The previous prime is 228148099. The next prime is 228148157. The reversal of 228148117 is 711841822.

228148117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130553476 + 97594641 = 11426^2 + 9879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228148117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228148157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114074058 + 114074059.

It is an arithmetic number, because the mean of its divisors is an integer number (114074059).

Almost surely, 2^228148117 is an apocalyptic number.

It is an amenable number.

228148117 is a deficient number, since it is larger than the sum of its proper divisors (1).

228148117 is an equidigital number, since it uses as much as digits as its factorization.

228148117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7168, while the sum is 34.

The square root of 228148117 is about 15104.5727182201. The cubic root of 228148117 is about 611.0437358142.

Adding to 228148117 its reverse (711841822), we get a palindrome (939989939).

The spelling of 228148117 in words is "two hundred twenty-eight million, one hundred forty-eight thousand, one hundred seventeen".