131123133020220 has 384 divisors, whose sum is σ = 431085685201920. Its totient is φ = 29441018880000.

The previous prime is 131123133020219. The next prime is 131123133020227. The reversal of 131123133020220 is 22020331321131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131123133020227) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 186407170 + ... + 187109270.

It is an arithmetic number, because the mean of its divisors is an integer number (1122618971880).

Almost surely, 2^{131123133020220} is an apocalyptic number.

131123133020220 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 131123133020220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215542842600960).

131123133020220 is an abundant number, since it is smaller than the sum of its proper divisors (299962552181700).

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

131123133020220 is a wasteful number, since it uses less digits than its factorization.

131123133020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702477 (or 702475 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 131123133020220 its reverse (22020331321131), we get a palindrome (153143464341351).

The spelling of 131123133020220 in words is "one hundred thirty-one trillion, one hundred twenty-three billion, one hundred thirty-three million, twenty thousand, two hundred twenty".