13131313231020 has 96 divisors (see below), whose sum is σ = 38939397271488. Its totient is φ = 3294947377152.

The previous prime is 13131313231009. The next prime is 13131313231033. The reversal of 13131313231020 is 2013231313131.

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, 2988492 + ... + 5932428.

It is an arithmetic number, because the mean of its divisors is an integer number (405618721578).

Almost surely, 2^{13131313231020} is an apocalyptic number.

13131313231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13131313231020 is an abundant number, since it is smaller than the sum of its proper divisors (25808084040468).

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

13131313231020 is a wasteful number, since it uses less digits than its factorization.

13131313231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948339 (or 2948337 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 13131313231020 its reverse (2013231313131), we get a palindrome (15144544544151).

The spelling of 13131313231020 in words is "thirteen trillion, one hundred thirty-one billion, three hundred thirteen million, two hundred thirty-one thousand, twenty".