131287560 has 64 divisors (see below), whose sum is σ = 397958400. Its totient is φ = 34646016.

The previous prime is 131287547. The next prime is 131287571. The reversal of 131287560 is 65782131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6001 + ... + 17279.

It is an arithmetic number, because the mean of its divisors is an integer number (6218100).

Almost surely, 2^131287560 is an apocalyptic number.

131287560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131287560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198979200).

131287560 is an abundant number, since it is smaller than the sum of its proper divisors (266670840).

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

131287560 is a wasteful number, since it uses less digits than its factorization.

131287560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11390 (or 11386 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 131287560 is about 11458.0783729210. The cubic root of 131287560 is about 508.2466510501.

The spelling of 131287560 in words is "one hundred thirty-one million, two hundred eighty-seven thousand, five hundred sixty".