12309001 has 2 divisors, whose sum is σ = 12309002. Its totient is φ = 12309000.

The previous prime is 12308999. The next prime is 12309013. The reversal of 12309001 is 10090321.

12309001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11723776 + 585225 = 3424^2 + 765^2 .

It is a cyclic number.

It is not a de Polignac number, because 12309001 - 2¹ = 12308999 is a prime.

Together with 12308999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12301001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6154500 + 6154501.

It is an arithmetic number, because the mean of its divisors is an integer number (6154501).

Almost surely, 2^12309001 is an apocalyptic number.

It is an amenable number.

12309001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12309001 is an equidigital number, since it uses as much as digits as its factorization.

12309001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 12309001 is about 3508.4185896213. The cubic root of 12309001 is about 230.8913177269.

Adding to 12309001 its reverse (10090321), we get a palindrome (22399322).

The spelling of 12309001 in words is "twelve million, three hundred nine thousand, one".