130231231220 has 48 divisors (see below), whose sum is σ = 295734136320. Its totient is φ = 47985068544.

The previous prime is 130231231171. The next prime is 130231231223. The reversal of 130231231220 is 22132132031.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 130231231192 and 130231231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130231231223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4058840 + ... + 4090799.

It is an arithmetic number, because the mean of its divisors is an integer number (6161127840).

Almost surely, 2^130231231220 is an apocalyptic number.

130231231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130231231220 is an abundant number, since it is smaller than the sum of its proper divisors (165502905100).

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

130231231220 is a wasteful number, since it uses less digits than its factorization.

130231231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8149712 (or 8149710 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 130231231220 its reverse (22132132031), we get a palindrome (152363363251).

The spelling of 130231231220 in words is "one hundred thirty billion, two hundred thirty-one million, two hundred thirty-one thousand, two hundred twenty".