12731343 has 4 divisors (see below), whose sum is σ = 16975128. Its totient is φ = 8487560.

The previous prime is 12731339. The next prime is 12731357. The reversal of 12731343 is 34313721.

12731343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12731343 - 2² = 12731339 is a prime.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12731363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2121888 + ... + 2121893.

It is an arithmetic number, because the mean of its divisors is an integer number (4243782).

Almost surely, 2^12731343 is an apocalyptic number.

12731343 is a deficient number, since it is larger than the sum of its proper divisors (4243785).

12731343 is an equidigital number, since it uses as much as digits as its factorization.

12731343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243784.

The product of its digits is 1512, while the sum is 24.

The square root of 12731343 is about 3568.1007553039. The cubic root of 12731343 is about 233.5024309394.

The spelling of 12731343 in words is "twelve million, seven hundred thirty-one thousand, three hundred forty-three".