12431226 has 16 divisors (see below), whose sum is σ = 25028928. Its totient is φ = 4116000.

The previous prime is 12431197. The next prime is 12431239. The reversal of 12431226 is 62213421.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5955 + ... + 7766.

It is an arithmetic number, because the mean of its divisors is an integer number (1564308).

Almost surely, 2^12431226 is an apocalyptic number.

12431226 is an abundant number, since it is smaller than the sum of its proper divisors (12597702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12431226 is a wasteful number, since it uses less digits than its factorization.

12431226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13877.

The product of its digits is 576, while the sum is 21.

The square root of 12431226 is about 3525.7943785763. The cubic root of 12431226 is about 231.6530311891.

Adding to 12431226 its reverse (62213421), we get a palindrome (74644647).

The spelling of 12431226 in words is "twelve million, four hundred thirty-one thousand, two hundred twenty-six".