12427331 has 12 divisors (see below), whose sum is σ = 14577408. Its totient is φ = 10562832.

The previous prime is 12427321. The next prime is 12427339. The reversal of 12427331 is 13372421.

It is a de Polignac number, because none of the positive numbers 2^k-12427331 is a prime.

It is a super-2 number, since 2×12427331² = 308877111567122, 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 = 12427297 and 12427306.

It is not an unprimeable number, because it can be changed into a prime (12427339) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5225 + ... + 7221.

It is an arithmetic number, because the mean of its divisors is an integer number (1214784).

Almost surely, 2^12427331 is an apocalyptic number.

12427331 is a deficient number, since it is larger than the sum of its proper divisors (2150077).

12427331 is a wasteful number, since it uses less digits than its factorization.

12427331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138 (or 2131 counting only the distinct ones).

The product of its digits is 1008, while the sum is 23.

The square root of 12427331 is about 3525.2419775102. The cubic root of 12427331 is about 231.6288345194.

Adding to 12427331 its reverse (13372421), we get a palindrome (25799752).

The spelling of 12427331 in words is "twelve million, four hundred twenty-seven thousand, three hundred thirty-one".