131020312020 has 96 divisors (see below), whose sum is σ = 397145548800. Its totient is φ = 32082263040.

The previous prime is 131020312019. The next prime is 131020312057. The reversal of 131020312020 is 20213020131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 290745 + ... + 588704.

It is an arithmetic number, because the mean of its divisors is an integer number (4136932800).

Almost surely, 2^131020312020 is an apocalyptic number.

131020312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131020312020 is an abundant number, since it is smaller than the sum of its proper divisors (266125236780).

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

131020312020 is a wasteful number, since it uses less digits than its factorization.

131020312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879665 (or 879663 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 131020312020 its reverse (20213020131), we get a palindrome (151233332151).

The spelling of 131020312020 in words is "one hundred thirty-one billion, twenty million, three hundred twelve thousand, twenty".