131031301321220 has 48 divisors (see below), whose sum is σ = 279679122859248. Its totient is φ = 51552842396160.

The previous prime is 131031301321211. The next prime is 131031301321357. The reversal of 131031301321220 is 22123103130131.

131031301321220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 13556181424384 + 117475119896836 = 3681872^2 + 10838594^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159377042 + ... + 160197078.

It is an arithmetic number, because the mean of its divisors is an integer number (5826648392901).

Almost surely, 2^{131031301321220} is an apocalyptic number.

131031301321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131031301321220 is an abundant number, since it is smaller than the sum of its proper divisors (148647821538028).

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

131031301321220 is a wasteful number, since it uses less digits than its factorization.

131031301321220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951080 (or 951078 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 131031301321220 its reverse (22123103130131), we get a palindrome (153154404451351).

The spelling of 131031301321220 in words is "one hundred thirty-one trillion, thirty-one billion, three hundred one million, three hundred twenty-one thousand, two hundred twenty".