12443331 has 8 divisors (see below), whose sum is σ = 16743760. Its totient is φ = 8219232.

The previous prime is 12443323. The next prime is 12443339. The reversal of 12443331 is 13334421.

It is an interprime number because it is at equal distance from previous prime (12443323) and next prime (12443339).

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

It is not a de Polignac number, because 12443331 - 2³ = 12443323 is a prime.

It is a super-2 number, since 2×12443331² = 309672972751122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12443298 and 12443307.

It is not an unprimeable number, because it can be changed into a prime (12443339) 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, 18700 + ... + 19353.

It is an arithmetic number, because the mean of its divisors is an integer number (2092970).

Almost surely, 2^12443331 is an apocalyptic number.

12443331 is a deficient number, since it is larger than the sum of its proper divisors (4300429).

12443331 is a wasteful number, since it uses less digits than its factorization.

12443331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38165.

The product of its digits is 864, while the sum is 21.

The square root of 12443331 is about 3527.5105953066. The cubic root of 12443331 is about 231.7281980913.

Adding to 12443331 its reverse (13334421), we get a palindrome (25777752).

The spelling of 12443331 in words is "twelve million, four hundred forty-three thousand, three hundred thirty-one".