131551044404 has 12 divisors (see below), whose sum is σ = 247923122244. Its totient is φ = 60715866624.

The previous prime is 131551044389. The next prime is 131551044431. The reversal of 131551044404 is 404440155131.

It can be written as a sum of positive squares in 2 ways, for example, as 10794794404 + 120756250000 = 103898^2 + 347500^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1264913837 + ... + 1264913940.

It is an arithmetic number, because the mean of its divisors is an integer number (20660260187).

Almost surely, 2^131551044404 is an apocalyptic number.

It is an amenable number.

131551044404 is a deficient number, since it is larger than the sum of its proper divisors (116372077840).

131551044404 is a wasteful number, since it uses less digits than its factorization.

131551044404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529827794 (or 2529827792 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 131551044404 its reverse (404440155131), we get a palindrome (535991199535).

The spelling of 131551044404 in words is "one hundred thirty-one billion, five hundred fifty-one million, forty-four thousand, four hundred four".