12132347 has 4 divisors (see below), whose sum is σ = 12338040. Its totient is φ = 11926656.

The previous prime is 12132331. The next prime is 12132349. The reversal of 12132347 is 74323121.

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

It is a cyclic number.

It is not a de Polignac number, because 12132347 - 2⁴ = 12132331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12132349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102758 + ... + 102875.

It is an arithmetic number, because the mean of its divisors is an integer number (3084510).

Almost surely, 2^12132347 is an apocalyptic number.

12132347 is a deficient number, since it is larger than the sum of its proper divisors (205693).

12132347 is an equidigital number, since it uses as much as digits as its factorization.

12132347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205692.

The product of its digits is 1008, while the sum is 23.

The square root of 12132347 is about 3483.1518772514. The cubic root of 12132347 is about 229.7814369835.

Adding to 12132347 its reverse (74323121), we get a palindrome (86455468).

The spelling of 12132347 in words is "twelve million, one hundred thirty-two thousand, three hundred forty-seven".