131900544 has 96 divisors (see below), whose sum is σ = 385985340. Its totient is φ = 43223040.

The previous prime is 131900543. The next prime is 131900579. The reversal of 131900544 is 445009131.

131900544 is a `hidden beast` number, since 1 + 31 + 90 + 0 + 544 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 124545600 + 7354944 = 11160^2 + 2712^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (131900543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69334 + ... + 71210.

Almost surely, 2^131900544 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 131900544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192992670).

131900544 is an abundant number, since it is smaller than the sum of its proper divisors (254084796).

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

131900544 is a wasteful number, since it uses less digits than its factorization.

131900544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958 (or 1943 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 131900544 is about 11484.7962106430. The cubic root of 131900544 is about 509.0364274412.

Adding to 131900544 its reverse (445009131), we get a palindrome (576909675).

The spelling of 131900544 in words is "one hundred thirty-one million, nine hundred thousand, five hundred forty-four".