12443402440131 has 64 divisors (see below), whose sum is σ = 19220693022720. Its totient is φ = 7100378588160.

The previous prime is 12443402440121. The next prime is 12443402440181. The reversal of 12443402440131 is 13104420434421.

It is a happy number.

It is not a de Polignac number, because 12443402440131 - 2⁵ = 12443402440099 is a prime.

It is a super-2 number, since 2×12443402440131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12443402440092 and 12443402440101.

It is not an unprimeable number, because it can be changed into a prime (12443402440121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4696450 + ... + 6851528.

It is an arithmetic number, because the mean of its divisors is an integer number (300323328480).

Almost surely, 2^{12443402440131} is an apocalyptic number.

12443402440131 is a deficient number, since it is larger than the sum of its proper divisors (6777290582589).

12443402440131 is a wasteful number, since it uses less digits than its factorization.

12443402440131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155316.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 12443402440131 its reverse (13104420434421), we get a palindrome (25547822874552).

The spelling of 12443402440131 in words is "twelve trillion, four hundred forty-three billion, four hundred two million, four hundred forty thousand, one hundred thirty-one".