131224340044 has 36 divisors (see below), whose sum is σ = 267167383560. Its totient is φ = 56232240960.

The previous prime is 131224340041. The next prime is 131224340083. The reversal of 131224340044 is 440043422131.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 131224339994 and 131224340021.

It is not an unprimeable number, because it can be changed into a prime (131224340041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1810584 + ... + 1881664.

It is an arithmetic number, because the mean of its divisors is an integer number (7421316210).

Almost surely, 2^131224340044 is an apocalyptic number.

131224340044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131224340044 is an abundant number, since it is smaller than the sum of its proper divisors (135943043516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131224340044 is a wasteful number, since it uses less digits than its factorization.

131224340044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80518 (or 80509 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 131224340044 its reverse (440043422131), we get a palindrome (571267762175).

The spelling of 131224340044 in words is "one hundred thirty-one billion, two hundred twenty-four million, three hundred forty thousand, forty-four".