131011203321220 has 12 divisors (see below), whose sum is σ = 275123526974604. Its totient is φ = 52404481328480.

The previous prime is 131011203321157. The next prime is 131011203321239. The reversal of 131011203321220 is 22123302110131.

It can be written as a sum of positive squares in 2 ways, for example, as 54866137780224 + 76145065540996 = 7407168^2 + 8726114^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131011203321191 and 131011203321200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275280083011 + ... + 3275280083050.

It is an arithmetic number, because the mean of its divisors is an integer number (22926960581217).

Almost surely, 2^{131011203321220} is an apocalyptic number.

131011203321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131011203321220 is an abundant number, since it is smaller than the sum of its proper divisors (144112323653384).

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

131011203321220 is a wasteful number, since it uses less digits than its factorization.

131011203321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6550560166070 (or 6550560166068 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 131011203321220 its reverse (22123302110131), we get a palindrome (153134505431351).

The spelling of 131011203321220 in words is "one hundred thirty-one trillion, eleven billion, two hundred three million, three hundred twenty-one thousand, two hundred twenty".