243089117 has 2 divisors, whose sum is σ = 243089118. Its totient is φ = 243089116.

The previous prime is 243089089. The next prime is 243089131. The reversal of 243089117 is 711980342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206956996 + 36132121 = 14386^2 + 6011^2 .

It is a cyclic number.

It is not a de Polignac number, because 243089117 - 2¹² = 243085021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243089317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121544558 + 121544559.

It is an arithmetic number, because the mean of its divisors is an integer number (121544559).

Almost surely, 2^243089117 is an apocalyptic number.

It is an amenable number.

243089117 is a deficient number, since it is larger than the sum of its proper divisors (1).

243089117 is an equidigital number, since it uses as much as digits as its factorization.

243089117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 243089117 is about 15591.3154352030. The cubic root of 243089117 is about 624.1014218843.

The spelling of 243089117 in words is "two hundred forty-three million, eighty-nine thousand, one hundred seventeen".