228386117 has 2 divisors, whose sum is σ = 228386118. Its totient is φ = 228386116.

The previous prime is 228386101. The next prime is 228386129. The reversal of 228386117 is 711683822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215238241 + 13147876 = 14671^2 + 3626^2 .

It is a cyclic number.

It is not a de Polignac number, because 228386117 - 2⁴ = 228386101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228386167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114193058 + 114193059.

It is an arithmetic number, because the mean of its divisors is an integer number (114193059).

Almost surely, 2^228386117 is an apocalyptic number.

It is an amenable number.

228386117 is a deficient number, since it is larger than the sum of its proper divisors (1).

228386117 is an equidigital number, since it uses as much as digits as its factorization.

228386117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 228386117 is about 15112.4490735288. The cubic root of 228386117 is about 611.2561385739.

The spelling of 228386117 in words is "two hundred twenty-eight million, three hundred eighty-six thousand, one hundred seventeen".