1310340420020 has 24 divisors (see below), whose sum is σ = 2751826206024. Its totient is φ = 524114963456.

The previous prime is 1310340419957. The next prime is 1310340420049. The reversal of 1310340420020 is 200240430131.

It can be written as a sum of positive squares in 4 ways, for example, as 619224200464 + 691116219556 = 786908^2 + 831334^2 .

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 = 1310340419974 and 1310340420001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813749 + ... + 1811868.

It is an arithmetic number, because the mean of its divisors is an integer number (114659425251).

Almost surely, 2^{1310340420020} is an apocalyptic number.

1310340420020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310340420020 is an abundant number, since it is smaller than the sum of its proper divisors (1441485786004).

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

1310340420020 is a wasteful number, since it uses less digits than its factorization.

1310340420020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2650579 (or 2650577 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1310340420020 its reverse (200240430131), we get a palindrome (1510580850151).

The spelling of 1310340420020 in words is "one trillion, three hundred ten billion, three hundred forty million, four hundred twenty thousand, twenty".