131540844 has 12 divisors (see below), whose sum is σ = 306928664. Its totient is φ = 43846944.

The previous prime is 131540821. The next prime is 131540867. The reversal of 131540844 is 448045131.

It is an interprime number because it is at equal distance from previous prime (131540821) and next prime (131540867).

It is a tau number, because it is divible by the number of its divisors (12).

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, 5480857 + ... + 5480880.

Almost surely, 2^131540844 is an apocalyptic number.

It is an amenable number.

131540844 is an abundant number, since it is smaller than the sum of its proper divisors (175387820).

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

131540844 is a wasteful number, since it uses less digits than its factorization.

131540844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10961744 (or 10961742 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 131540844 is about 11469.1256859449. The cubic root of 131540844 is about 508.5732827828.

Adding to 131540844 its reverse (448045131), we get a palindrome (579585975).

The spelling of 131540844 in words is "one hundred thirty-one million, five hundred forty thousand, eight hundred forty-four".