1312013213020 has 96 divisors (see below), whose sum is σ = 2915819182080. Its totient is φ = 494870745600.

The previous prime is 1312013213009. The next prime is 1312013213033. The reversal of 1312013213020 is 203123102131.

It is a super-2 number, since 2×1312013213020² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78938271 + ... + 78954889.

It is an arithmetic number, because the mean of its divisors is an integer number (30373116480).

Almost surely, 2^{1312013213020} is an apocalyptic number.

1312013213020 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 1312013213020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1457909591040).

1312013213020 is an abundant number, since it is smaller than the sum of its proper divisors (1603805969060).

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

1312013213020 is a wasteful number, since it uses less digits than its factorization.

1312013213020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19075 (or 19073 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1312013213020 its reverse (203123102131), we get a palindrome (1515136315151).

The spelling of 1312013213020 in words is "one trillion, three hundred twelve billion, thirteen million, two hundred thirteen thousand, twenty".