131080728 has 32 divisors (see below), whose sum is σ = 328178160. Its totient is φ = 43630080.

The previous prime is 131080709. The next prime is 131080739. The reversal of 131080728 is 827080131.

It is a happy number.

131080728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 131080695 and 131080704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14676 + ... + 21852.

Almost surely, 2^131080728 is an apocalyptic number.

It is an amenable number.

131080728 is an abundant number, since it is smaller than the sum of its proper divisors (197097432).

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

131080728 is a wasteful number, since it uses less digits than its factorization.

131080728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7947 (or 7943 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 131080728 is about 11449.0492181665. The cubic root of 131080728 is about 507.9796114743.

The spelling of 131080728 in words is "one hundred thirty-one million, eighty thousand, seven hundred twenty-eight".