130031231220 has 144 divisors (see below), whose sum is σ = 435469874112. Its totient is φ = 31142891520.

The previous prime is 130031231219. The next prime is 130031231243. The reversal of 130031231220 is 22132130031.

130031231220 is a `hidden beast` number, since 1 + 300 + 31 + 2 + 312 + 20 = 666.

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 = 130031231193 and 130031231202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 231277 + ... + 559956.

It is an arithmetic number, because the mean of its divisors is an integer number (3024096348).

Almost surely, 2^130031231220 is an apocalyptic number.

130031231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130031231220 is an abundant number, since it is smaller than the sum of its proper divisors (305438642892).

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

130031231220 is a wasteful number, since it uses less digits than its factorization.

130031231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791342 (or 791337 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 130031231220 its reverse (22132130031), we get a palindrome (152163361251).

The spelling of 130031231220 in words is "one hundred thirty billion, thirty-one million, two hundred thirty-one thousand, two hundred twenty".