131681528 has 32 divisors (see below), whose sum is σ = 270120960. Its totient is φ = 59683680.

The previous prime is 131681527. The next prime is 131681531. The reversal of 131681528 is 825186131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131681527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31751 + ... + 35657.

It is an arithmetic number, because the mean of its divisors is an integer number (8441280).

Almost surely, 2^131681528 is an apocalyptic number.

It is an amenable number.

131681528 is an abundant number, since it is smaller than the sum of its proper divisors (138439432).

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

131681528 is a wasteful number, since it uses less digits than its factorization.

131681528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307 (or 4303 counting only the distinct ones).

The product of its digits is 11520, while the sum is 35.

The square root of 131681528 is about 11475.2572084464. The cubic root of 131681528 is about 508.7545259353.

The spelling of 131681528 in words is "one hundred thirty-one million, six hundred eighty-one thousand, five hundred twenty-eight".