12231100309 has 2 divisors, whose sum is σ = 12231100310. Its totient is φ = 12231100308.

The previous prime is 12231100307. The next prime is 12231100339. The reversal of 12231100309 is 90300113221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12133683409 + 97416900 = 110153^2 + 9870^2 .

It is a cyclic number.

It is not a de Polignac number, because 12231100309 - 2¹ = 12231100307 is a prime.

Together with 12231100307, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12231100309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12231100307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115550154 + 6115550155.

It is an arithmetic number, because the mean of its divisors is an integer number (6115550155).

Almost surely, 2^12231100309 is an apocalyptic number.

It is an amenable number.

12231100309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231100309 is an equidigital number, since it uses as much as digits as its factorization.

12231100309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 12231100309 in words is "twelve billion, two hundred thirty-one million, one hundred thousand, three hundred nine".