130432681 has 4 divisors (see below), whose sum is σ = 131108692. Its totient is φ = 129756672.

The previous prime is 130432669. The next prime is 130432703. The reversal of 130432681 is 186234031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40960000 + 89472681 = 6400^2 + 9459^2 .

It is a cyclic number.

It is not a de Polignac number, because 130432681 - 2⁵ = 130432649 is a prime.

It is a super-2 number, since 2×130432681² = 34025368545695522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130432651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337716 + ... + 338101.

It is an arithmetic number, because the mean of its divisors is an integer number (32777173).

Almost surely, 2^130432681 is an apocalyptic number.

It is an amenable number.

130432681 is a deficient number, since it is larger than the sum of its proper divisors (676011).

130432681 is an equidigital number, since it uses as much as digits as its factorization.

130432681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676010.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 130432681 is about 11420.7128061255. The cubic root of 130432681 is about 507.1410985401.

The spelling of 130432681 in words is "one hundred thirty million, four hundred thirty-two thousand, six hundred eighty-one".