130302232520 has 64 divisors (see below), whose sum is σ = 301271972400. Its totient is φ = 50683898880.

The previous prime is 130302232477. The next prime is 130302232523. The reversal of 130302232520 is 25232203031.

It can be written as a sum of positive squares in 8 ways, for example, as 14999880676 + 115302351844 = 122474^2 + 339562^2 .

It is a super-2 number, since 2×130302232520² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (130302232523) 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, 2730626 + ... + 2777934.

Almost surely, 2^130302232520 is an apocalyptic number.

130302232520 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 130302232520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150635986200).

130302232520 is an abundant number, since it is smaller than the sum of its proper divisors (170969739880).

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

130302232520 is a wasteful number, since it uses less digits than its factorization.

130302232520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49218 (or 49214 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 130302232520 its reverse (25232203031), we get a palindrome (155534435551).

The spelling of 130302232520 in words is "one hundred thirty billion, three hundred two million, two hundred thirty-two thousand, five hundred twenty".