13120342031020 has 96 divisors (see below), whose sum is σ = 32279061580416. Its totient is φ = 4385662617600.

The previous prime is 13120342031011. The next prime is 13120342031059. The reversal of 13120342031020 is 2013024302131.

It is a junction number, because it is equal to n+sod(n) for n = 13120342030982 and 13120342031000.

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, 7553650 + ... + 9126790.

It is an arithmetic number, because the mean of its divisors is an integer number (336240224796).

Almost surely, 2^{13120342031020} is an apocalyptic number.

13120342031020 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 13120342031020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16139530790208).

13120342031020 is an abundant number, since it is smaller than the sum of its proper divisors (19158719549396).

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

13120342031020 is a wasteful number, since it uses less digits than its factorization.

13120342031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574651 (or 1574649 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13120342031020 its reverse (2013024302131), we get a palindrome (15133366333151).

The spelling of 13120342031020 in words is "thirteen trillion, one hundred twenty billion, three hundred forty-two million, thirty-one thousand, twenty".