131020213243212 has 72 divisors (see below), whose sum is σ = 333525737653472. Its totient is φ = 43365640032000.

The previous prime is 131020213243211. The next prime is 131020213243217. The reversal of 131020213243212 is 212342312020131.

131020213243212 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 2 + 0 + 213 + 2 + 432 + 12 = 666.

It is not an unprimeable number, because it can be changed into a prime (131020213243211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7577808 + ... + 17873544.

Almost surely, 2^{131020213243212} is an apocalyptic number.

131020213243212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131020213243212 is an abundant number, since it is smaller than the sum of its proper divisors (202505524410260).

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

131020213243212 is a wasteful number, since it uses less digits than its factorization.

131020213243212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10298239 (or 10298234 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 131020213243212 its reverse (212342312020131), we get a palindrome (343362525263343).

The spelling of 131020213243212 in words is "one hundred thirty-one trillion, twenty billion, two hundred thirteen million, two hundred forty-three thousand, two hundred twelve".