131320623204 has 36 divisors (see below), whose sum is σ = 331960385484. Its totient is φ = 43772086272.

The previous prime is 131320623149. The next prime is 131320623209. The reversal of 131320623204 is 402326023131.

131320623204 is a `hidden beast` number, since 1 + 3 + 1 + 32 + 0 + 623 + 2 + 0 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28791302400 + 102529320804 = 169680^2 + 320202^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (131320623209) 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, 1963564 + ... + 2029340.

It is an arithmetic number, because the mean of its divisors is an integer number (9221121819).

Almost surely, 2^131320623204 is an apocalyptic number.

It is an amenable number.

131320623204 is an abundant number, since it is smaller than the sum of its proper divisors (200639762280).

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

131320623204 is a wasteful number, since it uses less digits than its factorization.

131320623204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121244 (or 121239 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 131320623204 its reverse (402326023131), we get a palindrome (533646646335).

The spelling of 131320623204 in words is "one hundred thirty-one billion, three hundred twenty million, six hundred twenty-three thousand, two hundred four".