130306320 has 120 divisors (see below), whose sum is σ = 453887616. Its totient is φ = 34743168.

The previous prime is 130306307. The next prime is 130306321. The reversal of 130306320 is 23603031.

It is a happy number.

130306320 is a `hidden beast` number, since 1 + 3 + 0 + 30 + 632 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 130306293 and 130306302.

It is not an unprimeable number, because it can be changed into a prime (130306321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16089 + ... + 22791.

Almost surely, 2^130306320 is an apocalyptic number.

130306320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130306320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226943808).

130306320 is an abundant number, since it is smaller than the sum of its proper divisors (323581296).

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

130306320 is an equidigital number, since it uses as much as digits as its factorization.

130306320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6731 (or 6713 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 130306320 is about 11415.1793678418. The cubic root of 130306320 is about 506.9772756875.

Adding to 130306320 its reverse (23603031), we get a palindrome (153909351).

The spelling of 130306320 in words is "one hundred thirty million, three hundred six thousand, three hundred twenty".