131212065366 has 24 divisors (see below), whose sum is σ = 284314001400. Its totient is φ = 43734094656.

The previous prime is 131212065353. The next prime is 131212065371. The reversal of 131212065366 is 663560212131.

It is a super-3 number, since 3×131212065366³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 131212065366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17091 + ... + 512558.

It is an arithmetic number, because the mean of its divisors is an integer number (11846416725).

Almost surely, 2^131212065366 is an apocalyptic number.

131212065366 is an abundant number, since it is smaller than the sum of its proper divisors (153101936034).

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

131212065366 is a wasteful number, since it uses less digits than its factorization.

131212065366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543420 (or 543417 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 131212065366 its reverse (663560212131), we get a palindrome (794772277497).

The spelling of 131212065366 in words is "one hundred thirty-one billion, two hundred twelve million, sixty-five thousand, three hundred sixty-six".