12131334443 has 2 divisors, whose sum is σ = 12131334444. Its totient is φ = 12131334442.

The previous prime is 12131334403. The next prime is 12131334493. The reversal of 12131334443 is 34443313121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12131334443 - 2⁶ = 12131334379 is a prime.

It is not a weakly prime, because it can be changed into another prime (12131334403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065667221 + 6065667222.

It is an arithmetic number, because the mean of its divisors is an integer number (6065667222).

Almost surely, 2^12131334443 is an apocalyptic number.

12131334443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131334443 is an equidigital number, since it uses as much as digits as its factorization.

12131334443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 29.

Adding to 12131334443 its reverse (34443313121), we get a palindrome (46574647564).

The spelling of 12131334443 in words is "twelve billion, one hundred thirty-one million, three hundred thirty-four thousand, four hundred forty-three".