130521320 has 32 divisors (see below), whose sum is σ = 306443520. Its totient is φ = 49938240.

The previous prime is 130521283. The next prime is 130521323. The reversal of 130521320 is 23125031.

130521320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (130521323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70016 + ... + 71855.

It is an arithmetic number, because the mean of its divisors is an integer number (9576360).

Almost surely, 2^130521320 is an apocalyptic number.

130521320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130521320 is an abundant number, since it is smaller than the sum of its proper divisors (175922200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130521320 is a wasteful number, since it uses less digits than its factorization.

130521320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141905 (or 141901 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 130521320 is about 11424.5927717359. The cubic root of 130521320 is about 507.2559529371.

Adding to 130521320 its reverse (23125031), we get a palindrome (153646351).

The spelling of 130521320 in words is "one hundred thirty million, five hundred twenty-one thousand, three hundred twenty".