130305705 has 16 divisors (see below), whose sum is σ = 219462720. Its totient is φ = 65838528.

The previous prime is 130305691. The next prime is 130305709. The reversal of 130305705 is 507503031.

It is not a de Polignac number, because 130305705 - 2⁵ = 130305673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130305709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228322 + ... + 228891.

It is an arithmetic number, because the mean of its divisors is an integer number (13716420).

Almost surely, 2^130305705 is an apocalyptic number.

130305705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130305705 is a deficient number, since it is larger than the sum of its proper divisors (89157015).

130305705 is a wasteful number, since it uses less digits than its factorization.

130305705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457240.

The product of its (nonzero) digits is 1575, while the sum is 24.

The square root of 130305705 is about 11415.1524299941. The cubic root of 130305705 is about 506.9764781014.

Adding to 130305705 its reverse (507503031), we get a palindrome (637808736).

The spelling of 130305705 in words is "one hundred thirty million, three hundred five thousand, seven hundred five".