228500117 has 2 divisors, whose sum is σ = 228500118. Its totient is φ = 228500116.

The previous prime is 228500089. The next prime is 228500149. The reversal of 228500117 is 711005822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227225476 + 1274641 = 15074^2 + 1129^2 .

It is a cyclic number.

It is not a de Polignac number, because 228500117 - 2²² = 224305813 is a prime.

It is a super-3 number, since 3×228500117³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228500177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114250058 + 114250059.

It is an arithmetic number, because the mean of its divisors is an integer number (114250059).

Almost surely, 2^228500117 is an apocalyptic number.

It is an amenable number.

228500117 is a deficient number, since it is larger than the sum of its proper divisors (1).

228500117 is an equidigital number, since it uses as much as digits as its factorization.

228500117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 228500117 is about 15116.2203278465. The cubic root of 228500117 is about 611.3578254448.

Adding to 228500117 its reverse (711005822), we get a palindrome (939505939).

The spelling of 228500117 in words is "two hundred twenty-eight million, five hundred thousand, one hundred seventeen".