131031210120220 has 24 divisors (see below), whose sum is σ = 275209944537024. Its totient is φ = 52404026279616.

The previous prime is 131031210120047. The next prime is 131031210120221. The reversal of 131031210120220 is 22021012130131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031210120221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528483492 + ... + 528731371.

It is an arithmetic number, because the mean of its divisors is an integer number (11467081022376).

Almost surely, 2^{131031210120220} is an apocalyptic number.

131031210120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131031210120220 is an abundant number, since it is smaller than the sum of its proper divisors (144178734416804).

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

131031210120220 is a wasteful number, since it uses less digits than its factorization.

131031210120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057221069 (or 1057221067 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 131031210120220 its reverse (22021012130131), we get a palindrome (153052222250351).

The spelling of 131031210120220 in words is "one hundred thirty-one trillion, thirty-one billion, two hundred ten million, one hundred twenty thousand, two hundred twenty".