1310320130220 has 144 divisors (see below), whose sum is σ = 4187291603040. Its totient is φ = 330754295808.

The previous prime is 1310320130213. The next prime is 1310320130221. The reversal of 1310320130220 is 220310230131.

1310320130220 is a `hidden beast` number, since 1 + 310 + 3 + 2 + 0 + 130 + 220 = 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 = 1310320130193 and 1310320130202.

It is not an unprimeable number, because it can be changed into a prime (1310320130221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3990532 + ... + 4306388.

It is an arithmetic number, because the mean of its divisors is an integer number (29078413910).

Almost surely, 2^{1310320130220} is an apocalyptic number.

1310320130220 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 1310320130220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2093645801520).

1310320130220 is an abundant number, since it is smaller than the sum of its proper divisors (2876971472820).

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

1310320130220 is a wasteful number, since it uses less digits than its factorization.

1310320130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317104 (or 317099 counting only the distinct ones).

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

Adding to 1310320130220 its reverse (220310230131), we get a palindrome (1530630360351).

The spelling of 1310320130220 in words is "one trillion, three hundred ten billion, three hundred twenty million, one hundred thirty thousand, two hundred twenty".