288731273 has 2 divisors, whose sum is σ = 288731274. Its totient is φ = 288731272.

The previous prime is 288731269. The next prime is 288731323. The reversal of 288731273 is 372137882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288592144 + 139129 = 16988^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 288731273 - 2² = 288731269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 288731273.

It is not a weakly prime, because it can be changed into another prime (288739273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144365636 + 144365637.

It is an arithmetic number, because the mean of its divisors is an integer number (144365637).

Almost surely, 2^288731273 is an apocalyptic number.

It is an amenable number.

288731273 is a deficient number, since it is larger than the sum of its proper divisors (1).

288731273 is an equidigital number, since it uses as much as digits as its factorization.

288731273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 288731273 is about 16992.0944265267. The cubic root of 288731273 is about 660.9439149279.

The spelling of 288731273 in words is "two hundred eighty-eight million, seven hundred thirty-one thousand, two hundred seventy-three".