131224042444 has 24 divisors (see below), whose sum is σ = 250711887888. Its totient is φ = 59601277440.

The previous prime is 131224042429. The next prime is 131224042463. The reversal of 131224042444 is 444240422131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092649 + ... + 1206784.

It is an arithmetic number, because the mean of its divisors is an integer number (10446328662).

Almost surely, 2^131224042444 is an apocalyptic number.

It is an amenable number.

131224042444 is a deficient number, since it is larger than the sum of its proper divisors (119487845444).

131224042444 is a wasteful number, since it uses less digits than its factorization.

131224042444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300745 (or 2300743 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 131224042444 its reverse (444240422131), we get a palindrome (575464464575).

The spelling of 131224042444 in words is "one hundred thirty-one billion, two hundred twenty-four million, forty-two thousand, four hundred forty-four".