1312313312020 has 24 divisors (see below), whose sum is σ = 2759617683144. Its totient is φ = 524209186176.

The previous prime is 1312313311999. The next prime is 1312313312039. The reversal of 1312313312020 is 202133132131.

It can be written as a sum of positive squares in 4 ways, for example, as 449948491524 + 862364820496 = 670782^2 + 928636^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1312313311982 and 1312313312000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44743639 + ... + 44772958.

It is an arithmetic number, because the mean of its divisors is an integer number (114984070131).

Almost surely, 2^{1312313312020} is an apocalyptic number.

1312313312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312313312020 is an abundant number, since it is smaller than the sum of its proper divisors (1447304371124).

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

1312313312020 is a wasteful number, since it uses less digits than its factorization.

1312313312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89517339 (or 89517337 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1312313312020 its reverse (202133132131), we get a palindrome (1514446444151).

The spelling of 1312313312020 in words is "one trillion, three hundred twelve billion, three hundred thirteen million, three hundred twelve thousand, twenty".