12378343 has 4 divisors (see below), whose sum is σ = 12641760. Its totient is φ = 12114928.

The previous prime is 12378341. The next prime is 12378349. The reversal of 12378343 is 34387321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34387321 = 19 ⋅1809859.

It is a cyclic number.

It is not a de Polignac number, because 12378343 - 2¹ = 12378341 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12378341) 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, 131638 + ... + 131731.

It is an arithmetic number, because the mean of its divisors is an integer number (3160440).

Almost surely, 2^12378343 is an apocalyptic number.

12378343 is a deficient number, since it is larger than the sum of its proper divisors (263417).

12378343 is an equidigital number, since it uses as much as digits as its factorization.

12378343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263416.

The product of its digits is 12096, while the sum is 31.

The square root of 12378343 is about 3518.2869411121. The cubic root of 12378343 is about 231.3240767796.

It can be divided in two parts, 12378 and 343, that added together give a palindrome (12721).

The spelling of 12378343 in words is "twelve million, three hundred seventy-eight thousand, three hundred forty-three".