12431544403131 has 18 divisors (see below), whose sum is σ = 20888377331172. Its totient is φ = 7103739658680.

The previous prime is 12431544403097. The next prime is 12431544403139. The reversal of 12431544403131 is 13130444513421.

12431544403131 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 154 + 440 + 31 + 31 = 666.

It is not a de Polignac number, because 12431544403131 - 2¹⁴ = 12431544386747 is a prime.

It is a super-2 number, since 2×12431544403131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12431544403139) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14094721105 + ... + 14094721986.

Almost surely, 2^{12431544403131} is an apocalyptic number.

12431544403131 is a deficient number, since it is larger than the sum of its proper divisors (8456832928041).

12431544403131 is a wasteful number, since it uses less digits than its factorization.

12431544403131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28189443111 (or 28189443101 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 12431544403131 its reverse (13130444513421), we get a palindrome (25561988916552).

The spelling of 12431544403131 in words is "twelve trillion, four hundred thirty-one billion, five hundred forty-four million, four hundred three thousand, one hundred thirty-one".