288327961 has 2 divisors, whose sum is σ = 288327962. Its totient is φ = 288327960.

The previous prime is 288327937. The next prime is 288327971. The reversal of 288327961 is 169723882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154231561 + 134096400 = 12419^2 + 11580^2 .

It is a cyclic number.

It is not a de Polignac number, because 288327961 - 2⁷ = 288327833 is a prime.

It is not a weakly prime, because it can be changed into another prime (288327971) 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, 144163980 + 144163981.

It is an arithmetic number, because the mean of its divisors is an integer number (144163981).

Almost surely, 2^288327961 is an apocalyptic number.

It is an amenable number.

288327961 is a deficient number, since it is larger than the sum of its proper divisors (1).

288327961 is an equidigital number, since it uses as much as digits as its factorization.

288327961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 288327961 is about 16980.2226428277. Note that the first 3 decimals coincide. The cubic root of 288327961 is about 660.6360267625.

The spelling of 288327961 in words is "two hundred eighty-eight million, three hundred twenty-seven thousand, nine hundred sixty-one".