131324204544 has 160 divisors (see below), whose sum is σ = 380230767840. Its totient is φ = 40036073472.

The previous prime is 131324204521. The next prime is 131324204551. The reversal of 131324204544 is 445402423131.

It is a super-2 number, since 2×131324204544² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2146344 + ... + 2206680.

It is an arithmetic number, because the mean of its divisors is an integer number (2376442299).

Almost surely, 2^131324204544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131324204544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190115383920).

131324204544 is an abundant number, since it is smaller than the sum of its proper divisors (248906563296).

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

131324204544 is a wasteful number, since it uses less digits than its factorization.

131324204544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60480 (or 60464 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 131324204544 its reverse (445402423131), we get a palindrome (576726627675).

The spelling of 131324204544 in words is "one hundred thirty-one billion, three hundred twenty-four million, two hundred four thousand, five hundred forty-four".