130281985 has 4 divisors (see below), whose sum is σ = 156338388. Its totient is φ = 104225584.

The previous prime is 130281967. The next prime is 130282001. The reversal of 130281985 is 589182031.

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 58507201 + 71774784 = 7649^2 + 8472^2 .

It is a cyclic number.

It is not a de Polignac number, because 130281985 - 2⁷ = 130281857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13028194 + ... + 13028203.

It is an arithmetic number, because the mean of its divisors is an integer number (39084597).

Almost surely, 2^130281985 is an apocalyptic number.

It is an amenable number.

130281985 is a deficient number, since it is larger than the sum of its proper divisors (26056403).

130281985 is an equidigital number, since it uses as much as digits as its factorization.

130281985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26056402.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 130281985 is about 11414.1134127886. The cubic root of 130281985 is about 506.9457140050.

The spelling of 130281985 in words is "one hundred thirty million, two hundred eighty-one thousand, nine hundred eighty-five".