12371543 has 2 divisors, whose sum is σ = 12371544. Its totient is φ = 12371542.

The previous prime is 12371521. The next prime is 12371549. The reversal of 12371543 is 34517321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12371543 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12371549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6185771 + 6185772.

It is an arithmetic number, because the mean of its divisors is an integer number (6185772).

Almost surely, 2^12371543 is an apocalyptic number.

12371543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12371543 is an equidigital number, since it uses as much as digits as its factorization.

12371543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 12371543 is about 3517.3204289629. The cubic root of 12371543 is about 231.2817099930.

Adding to 12371543 its reverse (34517321), we get a palindrome (46888864).

The spelling of 12371543 in words is "twelve million, three hundred seventy-one thousand, five hundred forty-three".