131543560 has 32 divisors (see below), whose sum is σ = 297624600. Its totient is φ = 52323840.

The previous prime is 131543537. The next prime is 131543561. The reversal of 131543560 is 65345131.

It can be written as a sum of positive squares in 4 ways, for example, as 38266596 + 93276964 = 6186^2 + 9658^2 .

It is not an unprimeable number, because it can be changed into a prime (131543561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1845 + ... + 16324.

Almost surely, 2^131543560 is an apocalyptic number.

131543560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131543560 is an abundant number, since it is smaller than the sum of its proper divisors (166081040).

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

131543560 is a wasteful number, since it uses less digits than its factorization.

131543560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18361 (or 18357 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 131543560 is about 11469.2440901744. The cubic root of 131543560 is about 508.5767830278.

Adding to 131543560 its reverse (65345131), we get a palindrome (196888691).

The spelling of 131543560 in words is "one hundred thirty-one million, five hundred forty-three thousand, five hundred sixty".