1288323293 has 2 divisors, whose sum is σ = 1288323294. Its totient is φ = 1288323292.

The previous prime is 1288323263. The next prime is 1288323331. The reversal of 1288323293 is 3923238821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1254718084 + 33605209 = 35422^2 + 5797^2 .

It is a cyclic number.

It is not a de Polignac number, because 1288323293 - 2⁶ = 1288323229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1288323293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1288323263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644161646 + 644161647.

It is an arithmetic number, because the mean of its divisors is an integer number (644161647).

Almost surely, 2^1288323293 is an apocalyptic number.

It is an amenable number.

1288323293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288323293 is an equidigital number, since it uses as much as digits as its factorization.

1288323293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 1288323293 is about 35893.2207108808. The cubic root of 1288323293 is about 1088.1153902473.

The spelling of 1288323293 in words is "one billion, two hundred eighty-eight million, three hundred twenty-three thousand, two hundred ninety-three".