288423077 has 2 divisors, whose sum is σ = 288423078. Its totient is φ = 288423076.

The previous prime is 288423061. The next prime is 288423089. The reversal of 288423077 is 770324882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188403076 + 100020001 = 13726^2 + 10001^2 .

It is a cyclic number.

It is not a de Polignac number, because 288423077 - 2⁴ = 288423061 is a prime.

It is a super-3 number, since 3×288423077³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288423017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144211538 + 144211539.

It is an arithmetic number, because the mean of its divisors is an integer number (144211539).

Almost surely, 2^288423077 is an apocalyptic number.

It is an amenable number.

288423077 is a deficient number, since it is larger than the sum of its proper divisors (1).

288423077 is an equidigital number, since it uses as much as digits as its factorization.

288423077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 288423077 is about 16983.0231996544. The cubic root of 288423077 is about 660.7086641250.

The spelling of 288423077 in words is "two hundred eighty-eight million, four hundred twenty-three thousand, seventy-seven".