131212230041020 has 24 divisors (see below), whose sum is σ = 275581196452800. Its totient is φ = 52478127565632.

The previous prime is 131212230040999. The next prime is 131212230041021. The reversal of 131212230041020 is 20140032212131.

It is a junction number, because it is equal to n+sod(n) for n = 131212230040982 and 131212230041000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212230041021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422619115 + ... + 422929474.

It is an arithmetic number, because the mean of its divisors is an integer number (11482549852200).

Almost surely, 2^{131212230041020} is an apocalyptic number.

131212230041020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131212230041020 is an abundant number, since it is smaller than the sum of its proper divisors (144368966411780).

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

131212230041020 is a wasteful number, since it uses less digits than its factorization.

131212230041020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845556357 (or 845556355 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 131212230041020 its reverse (20140032212131), we get a palindrome (151352262253151).

The spelling of 131212230041020 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred thirty million, forty-one thousand, twenty".