12003011309 has 2 divisors, whose sum is σ = 12003011310. Its totient is φ = 12003011308.

The previous prime is 12003011299. The next prime is 12003011323. The reversal of 12003011309 is 90311030021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8244095209 + 3758916100 = 90797^2 + 61310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12003011309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12003019309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001505654 + 6001505655.

It is an arithmetic number, because the mean of its divisors is an integer number (6001505655).

Almost surely, 2^12003011309 is an apocalyptic number.

It is an amenable number.

12003011309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003011309 is an equidigital number, since it uses as much as digits as its factorization.

12003011309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The spelling of 12003011309 in words is "twelve billion, three million, eleven thousand, three hundred nine".