243601097 has 2 divisors, whose sum is σ = 243601098. Its totient is φ = 243601096.

The previous prime is 243601031. The next prime is 243601117. The reversal of 243601097 is 790106342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243484816 + 116281 = 15604^2 + 341^2 .

It is a cyclic number.

It is not a de Polignac number, because 243601097 - 2¹⁰ = 243600073 is a prime.

It is not a weakly prime, because it can be changed into another prime (243601697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121800548 + 121800549.

It is an arithmetic number, because the mean of its divisors is an integer number (121800549).

Almost surely, 2^243601097 is an apocalyptic number.

It is an amenable number.

243601097 is a deficient number, since it is larger than the sum of its proper divisors (1).

243601097 is an equidigital number, since it uses as much as digits as its factorization.

243601097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 243601097 is about 15607.7255549936. The cubic root of 243601097 is about 624.5392632114.

The spelling of 243601097 in words is "two hundred forty-three million, six hundred one thousand, ninety-seven".