131287889056 has 12 divisors (see below), whose sum is σ = 258473031642. Its totient is φ = 65643944512.

The previous prime is 131287889039. The next prime is 131287889059. The reversal of 131287889056 is 650988782131.

It can be written as a sum of positive squares in only one way, i.e., 131249696656 + 38192400 = 362284^2 + 6180^2 .

It is a super-2 number, since 2×131287889056² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131287889059) 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 as a sum of consecutive naturals, namely, 2051373235 + ... + 2051373298.

Almost surely, 2^131287889056 is an apocalyptic number.

131287889056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131287889056 is a deficient number, since it is larger than the sum of its proper divisors (127185142586).

131287889056 is an equidigital number, since it uses as much as digits as its factorization.

131287889056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102746543 (or 4102746535 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 58.

The spelling of 131287889056 in words is "one hundred thirty-one billion, two hundred eighty-seven million, eight hundred eighty-nine thousand, fifty-six".