12431277 has 12 divisors (see below), whose sum is σ = 18031104. Its totient is φ = 8253000.

The previous prime is 12431239. The next prime is 12431281. The reversal of 12431277 is 77213421.

It is a happy number.

It is not a de Polignac number, because 12431277 - 2¹¹ = 12429229 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12431277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431977) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 493 + ... + 5010.

It is an arithmetic number, because the mean of its divisors is an integer number (1502592).

Almost surely, 2^12431277 is an apocalyptic number.

It is an amenable number.

12431277 is a deficient number, since it is larger than the sum of its proper divisors (5599827).

12431277 is a wasteful number, since it uses less digits than its factorization.

12431277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760 (or 5757 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 12431277 is about 3525.8016109815. The cubic root of 12431277 is about 231.6533479798.

Adding to 12431277 its reverse (77213421), we get a palindrome (89644698).

The spelling of 12431277 in words is "twelve million, four hundred thirty-one thousand, two hundred seventy-seven".