131201201020 has 12 divisors (see below), whose sum is σ = 275522522184. Its totient is φ = 52480480400.

The previous prime is 131201201009. The next prime is 131201201023. The reversal of 131201201020 is 20102102131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201201023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3280030006 + ... + 3280030045.

It is an arithmetic number, because the mean of its divisors is an integer number (22960210182).

Almost surely, 2^131201201020 is an apocalyptic number.

131201201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131201201020 is an abundant number, since it is smaller than the sum of its proper divisors (144321321164).

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

131201201020 is a wasteful number, since it uses less digits than its factorization.

131201201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6560060060 (or 6560060058 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 131201201020 its reverse (20102102131), we get a palindrome (151303303151).

The spelling of 131201201020 in words is "one hundred thirty-one billion, two hundred one million, two hundred one thousand, twenty".