131224154444 has 12 divisors (see below), whose sum is σ = 229644844968. Its totient is φ = 65611341600.

The previous prime is 131224154441. The next prime is 131224154491. The reversal of 131224154444 is 444451422131.

It is not an unprimeable number, because it can be changed into a prime (131224154441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500279 + ... + 716049.

It is an arithmetic number, because the mean of its divisors is an integer number (19137070414).

Almost surely, 2^131224154444 is an apocalyptic number.

It is an amenable number.

131224154444 is a deficient number, since it is larger than the sum of its proper divisors (98420690524).

131224154444 is a wasteful number, since it uses less digits than its factorization.

131224154444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367816 (or 367814 counting only the distinct ones).

The product of its digits is 61440, while the sum is 35.

Adding to 131224154444 its reverse (444451422131), we get a palindrome (575675576575).

The spelling of 131224154444 in words is "one hundred thirty-one billion, two hundred twenty-four million, one hundred fifty-four thousand, four hundred forty-four".