12444430131 has 24 divisors (see below), whose sum is σ = 20574428160. Its totient is φ = 7100288496.

The previous prime is 12444430109. The next prime is 12444430169. The reversal of 12444430131 is 13103444421.

It is not a de Polignac number, because 12444430131 - 2⁹ = 12444429619 is a prime.

It is a super-2 number, since 2×12444430131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12444430095 and 12444430104.

It is not an unprimeable number, because it can be changed into a prime (12444434131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108355 + ... + 191388.

It is an arithmetic number, because the mean of its divisors is an integer number (857267840).

Almost surely, 2^12444430131 is an apocalyptic number.

12444430131 is a deficient number, since it is larger than the sum of its proper divisors (8129998029).

12444430131 is a wasteful number, since it uses less digits than its factorization.

12444430131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300415 (or 300412 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 12444430131 its reverse (13103444421), we get a palindrome (25547874552).

The spelling of 12444430131 in words is "twelve billion, four hundred forty-four million, four hundred thirty thousand, one hundred thirty-one".