12340205343 has 12 divisors (see below), whose sum is σ = 17826237000. Its totient is φ = 8226113136.

The previous prime is 12340205333. The next prime is 12340205399. The reversal of 12340205343 is 34350204321.

12340205343 is a `hidden beast` number, since 123 + 4 + 0 + 2 + 0 + 534 + 3 = 666.

It is not a de Polignac number, because 12340205343 - 2⁶ = 12340205279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340205333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70705 + ... + 172277.

It is an arithmetic number, because the mean of its divisors is an integer number (1485519750).

Almost surely, 2^12340205343 is an apocalyptic number.

12340205343 is a deficient number, since it is larger than the sum of its proper divisors (5486031657).

12340205343 is a wasteful number, since it uses less digits than its factorization.

12340205343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115078 (or 115075 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 12340205343 its reverse (34350204321), we get a palindrome (46690409664).

The spelling of 12340205343 in words is "twelve billion, three hundred forty million, two hundred five thousand, three hundred forty-three".