12381283 has 4 divisors (see below), whose sum is σ = 12388360. Its totient is φ = 12374208.

The previous prime is 12381227. The next prime is 12381319. The reversal of 12381283 is 38218321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12381283 - 2¹⁷ = 12250211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12381223) 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, 1216 + ... + 5122.

It is an arithmetic number, because the mean of its divisors is an integer number (3097090).

Almost surely, 2^12381283 is an apocalyptic number.

12381283 is a deficient number, since it is larger than the sum of its proper divisors (7077).

12381283 is an equidigital number, since it uses as much as digits as its factorization.

12381283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7076.

The product of its digits is 2304, while the sum is 28.

The square root of 12381283 is about 3518.7047332790. The cubic root of 12381283 is about 231.3423893801.

It can be divided in two parts, 123 and 81283, that added together give a triangular number (81406 = T₄₀₃).

The spelling of 12381283 in words is "twelve million, three hundred eighty-one thousand, two hundred eighty-three".