12347143 has 4 divisors (see below), whose sum is σ = 12441528. Its totient is φ = 12252760.

The previous prime is 12347123. The next prime is 12347161. The reversal of 12347143 is 34174321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34174321 = 277 ⋅123373.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12347143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12347123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46996 + ... + 47257.

It is an arithmetic number, because the mean of its divisors is an integer number (3110382).

Almost surely, 2^12347143 is an apocalyptic number.

12347143 is a deficient number, since it is larger than the sum of its proper divisors (94385).

12347143 is an equidigital number, since it uses as much as digits as its factorization.

12347143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94384.

The product of its digits is 2016, while the sum is 25.

The square root of 12347143 is about 3513.8501675513. The cubic root of 12347143 is about 231.1295600736.

The spelling of 12347143 in words is "twelve million, three hundred forty-seven thousand, one hundred forty-three".