131132322020 has 96 divisors (see below), whose sum is σ = 318112704000. Its totient is φ = 44475577344.

The previous prime is 131132322001. The next prime is 131132322089. The reversal of 131132322020 is 20223231131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 131132321983 and 131132322001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15122246 + ... + 15130914.

It is an arithmetic number, because the mean of its divisors is an integer number (3313674000).

Almost surely, 2^131132322020 is an apocalyptic number.

131132322020 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 131132322020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159056352000).

131132322020 is an abundant number, since it is smaller than the sum of its proper divisors (186980381980).

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

131132322020 is a wasteful number, since it uses less digits than its factorization.

131132322020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9837 (or 9835 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131132322020 its reverse (20223231131), we get a palindrome (151355553151).

The spelling of 131132322020 in words is "one hundred thirty-one billion, one hundred thirty-two million, three hundred twenty-two thousand, twenty".