12231200309 has 2 divisors, whose sum is σ = 12231200310. Its totient is φ = 12231200308.

The previous prime is 12231200299. The next prime is 12231200329. The reversal of 12231200309 is 90300213221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12165428209 + 65772100 = 110297^2 + 8110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231200309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12231200329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115600154 + 6115600155.

It is an arithmetic number, because the mean of its divisors is an integer number (6115600155).

Almost surely, 2^12231200309 is an apocalyptic number.

It is an amenable number.

12231200309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231200309 is an equidigital number, since it uses as much as digits as its factorization.

12231200309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 12231200309 in words is "twelve billion, two hundred thirty-one million, two hundred thousand, three hundred nine".