131011203240220 has 48 divisors (see below), whose sum is σ = 276719669519328. Its totient is φ = 52100466886400.

The previous prime is 131011203240217. The next prime is 131011203240227. The reversal of 131011203240220 is 22042302110131.

It is a junction number, because it is equal to n+sod(n) for n = 131011203240191 and 131011203240200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131011203240227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174878682 + ... + 175626238.

It is an arithmetic number, because the mean of its divisors is an integer number (5764993114986).

Almost surely, 2^{131011203240220} is an apocalyptic number.

131011203240220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131011203240220 is an abundant number, since it is smaller than the sum of its proper divisors (145708466279108).

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

131011203240220 is a wasteful number, since it uses less digits than its factorization.

131011203240220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798390 (or 798388 counting only the distinct ones).

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

Adding to 131011203240220 its reverse (22042302110131), we get a palindrome (153053505350351).

The spelling of 131011203240220 in words is "one hundred thirty-one trillion, eleven billion, two hundred three million, two hundred forty thousand, two hundred twenty".