12447231 has 8 divisors (see below), whose sum is σ = 17001264. Its totient is φ = 8095680.

The previous prime is 12447221. The next prime is 12447269. The reversal of 12447231 is 13274421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12447231 - 2⁵ = 12447199 is a prime.

It is a super-2 number, since 2×12447231² = 309867119134722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12447221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50476 + ... + 50721.

It is an arithmetic number, because the mean of its divisors is an integer number (2125158).

Almost surely, 2^12447231 is an apocalyptic number.

12447231 is a deficient number, since it is larger than the sum of its proper divisors (4554033).

12447231 is a wasteful number, since it uses less digits than its factorization.

12447231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101241.

The product of its digits is 1344, while the sum is 24.

The square root of 12447231 is about 3528.0633497714. The cubic root of 12447231 is about 231.7524050492.

The spelling of 12447231 in words is "twelve million, four hundred forty-seven thousand, two hundred thirty-one".