131031031130220 has 96 divisors (see below), whose sum is σ = 395181081630720. Its totient is φ = 32247904423680.

The previous prime is 131031031130161. The next prime is 131031031130221. The reversal of 131031031130220 is 22031130130131.

It is a happy number.

It is a super-2 number, since 2×131031031130220² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131031031130221) by changing a digit.

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, 11056596 + ... + 19603835.

It is an arithmetic number, because the mean of its divisors is an integer number (4116469600320).

Almost surely, 2^{131031031130220} is an apocalyptic number.

131031031130220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131031031130220 is an abundant number, since it is smaller than the sum of its proper divisors (264150050500500).

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

131031031130220 is a wasteful number, since it uses less digits than its factorization.

131031031130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30665935 (or 30665933 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 131031031130220 its reverse (22031130130131), we get a palindrome (153062161260351).

The spelling of 131031031130220 in words is "one hundred thirty-one trillion, thirty-one billion, thirty-one million, one hundred thirty thousand, two hundred twenty".