12735971 has 2 divisors, whose sum is σ = 12735972. Its totient is φ = 12735970.

The previous prime is 12735967. The next prime is 12735973. The reversal of 12735971 is 17953721.

It is a happy number.

12735971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (17953721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12735971 - 2² = 12735967 is a prime.

Together with 12735973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12735973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6367985 + 6367986.

It is an arithmetic number, because the mean of its divisors is an integer number (6367986).

Almost surely, 2^12735971 is an apocalyptic number.

12735971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12735971 is an equidigital number, since it uses as much as digits as its factorization.

12735971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 35.

The square root of 12735971 is about 3568.7492206654. The cubic root of 12735971 is about 233.5307211817.

The spelling of 12735971 in words is "twelve million, seven hundred thirty-five thousand, nine hundred seventy-one".