131023212444220 has 24 divisors (see below), whose sum is σ = 275149262683008. Its totient is φ = 52409186587200.

The previous prime is 131023212444149. The next prime is 131023212444253. The reversal of 131023212444220 is 22444212320131.

It is a super-2 number, since 2×131023212444220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5289205 + ... + 17030035.

It is an arithmetic number, because the mean of its divisors is an integer number (11464552611792).

Almost surely, 2^{131023212444220} is an apocalyptic number.

131023212444220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131023212444220 is an abundant number, since it is smaller than the sum of its proper divisors (144126050238788).

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

131023212444220 is a wasteful number, since it uses less digits than its factorization.

131023212444220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12298821 (or 12298819 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 131023212444220 its reverse (22444212320131), we get a palindrome (153467424764351).

The spelling of 131023212444220 in words is "one hundred thirty-one trillion, twenty-three billion, two hundred twelve million, four hundred forty-four thousand, two hundred twenty".