130321032020 has 48 divisors (see below), whose sum is σ = 289915346448. Its totient is φ = 49037875200.

The previous prime is 130321031993. The next prime is 130321032059. The reversal of 130321032020 is 20230123031.

It can be written as a sum of positive squares in 8 ways, for example, as 10878907204 + 119442124816 = 104302^2 + 345604^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 130321032020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604670 + ... + 791370.

It is an arithmetic number, because the mean of its divisors is an integer number (6039903051).

Almost surely, 2^130321032020 is an apocalyptic number.

130321032020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130321032020 is an abundant number, since it is smaller than the sum of its proper divisors (159594314428).

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

130321032020 is a wasteful number, since it uses less digits than its factorization.

130321032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188780 (or 188778 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 130321032020 its reverse (20230123031), we get a palindrome (150551155051).

The spelling of 130321032020 in words is "one hundred thirty billion, three hundred twenty-one million, thirty-two thousand, twenty".