12143383 has 4 divisors (see below), whose sum is σ = 13878160. Its totient is φ = 10408608.

The previous prime is 12143371. The next prime is 12143387. The reversal of 12143383 is 38334121.

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

It is a de Polignac number, because none of the positive numbers 2^k-12143383 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 (12143387) 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, 867378 + ... + 867391.

It is an arithmetic number, because the mean of its divisors is an integer number (3469540).

Almost surely, 2^12143383 is an apocalyptic number.

12143383 is a deficient number, since it is larger than the sum of its proper divisors (1734777).

12143383 is an equidigital number, since it uses as much as digits as its factorization.

12143383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734776.

The product of its digits is 1728, while the sum is 25.

The square root of 12143383 is about 3484.7357145127. The cubic root of 12143383 is about 229.8510882341.

The spelling of 12143383 in words is "twelve million, one hundred forty-three thousand, three hundred eighty-three".