243115030273 has 2 divisors, whose sum is σ = 243115030274. Its totient is φ = 243115030272.

The previous prime is 243115030243. The next prime is 243115030297. The reversal of 243115030273 is 372030511342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132537499249 + 110577531024 = 364057^2 + 332532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243115030273 is a prime.

It is not a weakly prime, because it can be changed into another prime (243115030243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121557515136 + 121557515137.

It is an arithmetic number, because the mean of its divisors is an integer number (121557515137).

Almost surely, 2^243115030273 is an apocalyptic number.

It is an amenable number.

243115030273 is a deficient number, since it is larger than the sum of its proper divisors (1).

243115030273 is an equidigital number, since it uses as much as digits as its factorization.

243115030273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 31.

The spelling of 243115030273 in words is "two hundred forty-three billion, one hundred fifteen million, thirty thousand, two hundred seventy-three".