12081347 has 6 divisors (see below), whose sum is σ = 12384924. Its totient is φ = 11785040.

The previous prime is 12081343. The next prime is 12081389. The reversal of 12081347 is 74318021.

It is not a de Polignac number, because 12081347 - 2² = 12081343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12081343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1913 + ... + 5274.

It is an arithmetic number, because the mean of its divisors is an integer number (2064154).

Almost surely, 2^12081347 is an apocalyptic number.

12081347 is a deficient number, since it is larger than the sum of its proper divisors (303577).

12081347 is an frugal number, since it uses more digits than its factorization.

12081347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7269 (or 7228 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 12081347 is about 3475.8232118449. The cubic root of 12081347 is about 229.4590120823.

Adding to 12081347 its reverse (74318021), we get a palindrome (86399368).

The spelling of 12081347 in words is "twelve million, eighty-one thousand, three hundred forty-seven".