130705 has 4 divisors (see below), whose sum is σ = 156852. Its totient is φ = 104560.

The previous prime is 130699. The next prime is 130729. The reversal of 130705 is 507031.

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 69696 + 61009 = 264^2 + 247^2 .

It is not a de Polignac number, because 130705 - 2¹¹ = 128657 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13066 + ... + 13075.

It is an arithmetic number, because the mean of its divisors is an integer number (39213).

2¹³⁰⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

130705 is a deficient number, since it is larger than the sum of its proper divisors (26147).

130705 is an equidigital number, since it uses as much as digits as its factorization.

130705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26146.

The product of its (nonzero) digits is 105, while the sum is 16.

The square root of 130705 is about 361.5314647441. The cubic root of 130705 is about 50.7493791733.

Adding to 130705 its reverse (507031), we get a palindrome (637736).

The spelling of 130705 in words is "one hundred thirty thousand, seven hundred five".