131312066884 has 12 divisors (see below), whose sum is σ = 229799531500. Its totient is φ = 65655057888.

The previous prime is 131312066881. The next prime is 131312066929. The reversal of 131312066884 is 488660213131.

It can be written as a sum of positive squares in 2 ways, for example, as 69236344384 + 62075722500 = 263128^2 + 249150^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131312066884.

It is not an unprimeable number, because it can be changed into a prime (131312066881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118942 + ... + 526090.

Almost surely, 2^131312066884 is an apocalyptic number.

It is an amenable number.

131312066884 is a deficient number, since it is larger than the sum of its proper divisors (98487464616).

131312066884 is a wasteful number, since it uses less digits than its factorization.

131312066884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487782 (or 487780 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 131312066884 in words is "one hundred thirty-one billion, three hundred twelve million, sixty-six thousand, eight hundred eighty-four".