12003131243 has 2 divisors, whose sum is σ = 12003131244. Its totient is φ = 12003131242.

The previous prime is 12003131171. The next prime is 12003131297. The reversal of 12003131243 is 34213130021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12003131243 is a prime.

It is not a weakly prime, because it can be changed into another prime (12003131443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001565621 + 6001565622.

It is an arithmetic number, because the mean of its divisors is an integer number (6001565622).

Almost surely, 2^12003131243 is an apocalyptic number.

12003131243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003131243 is an equidigital number, since it uses as much as digits as its factorization.

12003131243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12003131243 its reverse (34213130021), we get a palindrome (46216261264).

The spelling of 12003131243 in words is "twelve billion, three million, one hundred thirty-one thousand, two hundred forty-three".