1288664323 has 2 divisors, whose sum is σ = 1288664324. Its totient is φ = 1288664322.

The previous prime is 1288664287. The next prime is 1288664359. The reversal of 1288664323 is 3234668821.

It is a balanced prime because it is at equal distance from previous prime (1288664287) and next prime (1288664359).

It is an emirp because it is prime and its reverse (3234668821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1288664323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1288664323.

It is not a weakly prime, because it can be changed into another prime (1288664623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644332161 + 644332162.

It is an arithmetic number, because the mean of its divisors is an integer number (644332162).

Almost surely, 2^1288664323 is an apocalyptic number.

1288664323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288664323 is an equidigital number, since it uses as much as digits as its factorization.

1288664323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 43.

The square root of 1288664323 is about 35897.9710150866. The cubic root of 1288664323 is about 1088.2113928722.

The spelling of 1288664323 in words is "one billion, two hundred eighty-eight million, six hundred sixty-four thousand, three hundred twenty-three".