12311426 has 4 divisors (see below), whose sum is σ = 18467142. Its totient is φ = 6155712.

The previous prime is 12311419. The next prime is 12311443. The reversal of 12311426 is 62411321.

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

It can be written as a sum of positive squares in only one way, i.e., 10883401 + 1428025 = 3299^2 + 1195^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12311398 and 12311407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3077855 + ... + 3077858.

Almost surely, 2^12311426 is an apocalyptic number.

12311426 is a deficient number, since it is larger than the sum of its proper divisors (6155716).

12311426 is an equidigital number, since it uses as much as digits as its factorization.

12311426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6155715.

The product of its digits is 288, while the sum is 20.

The square root of 12311426 is about 3508.7641699037. The cubic root of 12311426 is about 230.9064793874.

Adding to 12311426 its reverse (62411321), we get a palindrome (74722747).

The spelling of 12311426 in words is "twelve million, three hundred eleven thousand, four hundred twenty-six".