130312120020 has 48 divisors (see below), whose sum is σ = 377455800960. Its totient is φ = 33551625856.

The previous prime is 130312119943. The next prime is 130312120021. The reversal of 130312120020 is 20021213031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130312120021) 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, 37444272 + ... + 37447751.

It is an arithmetic number, because the mean of its divisors is an integer number (7863662520).

Almost surely, 2^130312120020 is an apocalyptic number.

130312120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130312120020 is an abundant number, since it is smaller than the sum of its proper divisors (247143680940).

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

130312120020 is a wasteful number, since it uses less digits than its factorization.

130312120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74892064 (or 74892062 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 130312120020 its reverse (20021213031), we get a palindrome (150333333051).

The spelling of 130312120020 in words is "one hundred thirty billion, three hundred twelve million, one hundred twenty thousand, twenty".