130311020 has 48 divisors (see below), whose sum is σ = 315705600. Its totient is φ = 44255424.

The previous prime is 130310989. The next prime is 130311043. The reversal of 130311020 is 20113031.

It is a junction number, because it is equal to n+sod(n) for n = 130310992 and 130311010.

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, 10631 + ... + 19329.

It is an arithmetic number, because the mean of its divisors is an integer number (6577200).

Almost surely, 2^130311020 is an apocalyptic number.

130311020 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 130311020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157852800).

130311020 is an abundant number, since it is smaller than the sum of its proper divisors (185394580).

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

130311020 is a wasteful number, since it uses less digits than its factorization.

130311020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8822 (or 8820 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 130311020 is about 11415.3852322206. The cubic root of 130311020 is about 506.9833709778.

Adding to 130311020 its reverse (20113031), we get a palindrome (150424051).

The spelling of 130311020 in words is "one hundred thirty million, three hundred eleven thousand, twenty".