12331426 has 16 divisors (see below), whose sum is σ = 19837440. Its totient is φ = 5728320.

The previous prime is 12331391. The next prime is 12331441. The reversal of 12331426 is 62413321.

It is a junction number, because it is equal to n+sod(n) for n = 12331397 and 12331406.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 391 + ... + 4981.

It is an arithmetic number, because the mean of its divisors is an integer number (1239840).

Almost surely, 2^12331426 is an apocalyptic number.

12331426 is a deficient number, since it is larger than the sum of its proper divisors (7506014).

12331426 is a wasteful number, since it uses less digits than its factorization.

12331426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689.

The product of its digits is 864, while the sum is 22.

The square root of 12331426 is about 3511.6130196820. The cubic root of 12331426 is about 231.0314481525.

Adding to 12331426 its reverse (62413321), we get a palindrome (74744747).

The spelling of 12331426 in words is "twelve million, three hundred thirty-one thousand, four hundred twenty-six".