12431324402131 has 8 divisors (see below), whose sum is σ = 12436779409760. Its totient is φ = 12425869789632.

The previous prime is 12431324402117. The next prime is 12431324402143. The reversal of 12431324402131 is 13120442313421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12431324402131 - 2⁵ = 12431324402099 is a prime.

It is a super-2 number, since 2×12431324402131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12431324402093 and 12431324402102.

It is not an unprimeable number, because it can be changed into a prime (12431324402111) 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 7 ways as a sum of consecutive naturals, for example, 75280351 + ... + 75445303.

It is an arithmetic number, because the mean of its divisors is an integer number (1554597426220).

Almost surely, 2^{12431324402131} is an apocalyptic number.

12431324402131 is a deficient number, since it is larger than the sum of its proper divisors (5455007629).

12431324402131 is a wasteful number, since it uses less digits than its factorization.

12431324402131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197565.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 12431324402131 its reverse (13120442313421), we get a palindrome (25551766715552).

The spelling of 12431324402131 in words is "twelve trillion, four hundred thirty-one billion, three hundred twenty-four million, four hundred two thousand, one hundred thirty-one".