229187117 has 2 divisors, whose sum is σ = 229187118. Its totient is φ = 229187116.

The previous prime is 229187107. The next prime is 229187129. The reversal of 229187117 is 711781922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213773641 + 15413476 = 14621^2 + 3926^2 .

It is a cyclic number.

It is not a de Polignac number, because 229187117 - 2⁶ = 229187053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229187107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114593558 + 114593559.

It is an arithmetic number, because the mean of its divisors is an integer number (114593559).

Almost surely, 2^229187117 is an apocalyptic number.

It is an amenable number.

229187117 is a deficient number, since it is larger than the sum of its proper divisors (1).

229187117 is an equidigital number, since it uses as much as digits as its factorization.

229187117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 38.

The square root of 229187117 is about 15138.9272076987. The cubic root of 229187117 is about 611.9699077077.

The spelling of 229187117 in words is "two hundred twenty-nine million, one hundred eighty-seven thousand, one hundred seventeen".