288817117 has 2 divisors, whose sum is σ = 288817118. Its totient is φ = 288817116.

The previous prime is 288817091. The next prime is 288817159. The reversal of 288817117 is 711718882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283383556 + 5433561 = 16834^2 + 2331^2 .

It is a cyclic number.

It is not a de Polignac number, because 288817117 - 2²³ = 280428509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288817517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144408558 + 144408559.

It is an arithmetic number, because the mean of its divisors is an integer number (144408559).

Almost surely, 2^288817117 is an apocalyptic number.

It is an amenable number.

288817117 is a deficient number, since it is larger than the sum of its proper divisors (1).

288817117 is an equidigital number, since it uses as much as digits as its factorization.

288817117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50176, while the sum is 43.

The square root of 288817117 is about 16994.6202370044. The cubic root of 288817117 is about 661.0094111783.

The spelling of 288817117 in words is "two hundred eighty-eight million, eight hundred seventeen thousand, one hundred seventeen".