130303905 has 32 divisors (see below), whose sum is σ = 213233664. Its totient is φ = 67931136.

The previous prime is 130303897. The next prime is 130303907. The reversal of 130303905 is 509303031.

It is not a de Polignac number, because 130303905 - 2³ = 130303897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130303907) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 138597 + ... + 139533.

It is an arithmetic number, because the mean of its divisors is an integer number (6663552).

Almost surely, 2^130303905 is an apocalyptic number.

130303905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130303905 is a deficient number, since it is larger than the sum of its proper divisors (82929759).

130303905 is a wasteful number, since it uses less digits than its factorization.

130303905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145.

The product of its (nonzero) digits is 1215, while the sum is 24.

The square root of 130303905 is about 11415.0735871478. The cubic root of 130303905 is about 506.9741436888.

Adding to 130303905 its reverse (509303031), we get a palindrome (639606936).

The spelling of 130303905 in words is "one hundred thirty million, three hundred three thousand, nine hundred five".