131031854781 has 16 divisors (see below), whose sum is σ = 175071683520. Its totient is φ = 87173470080.

The previous prime is 131031854683. The next prime is 131031854813. The reversal of 131031854781 is 187458130131.

It is not a de Polignac number, because 131031854781 - 2¹¹ = 131031852733 is a prime.

It is a super-3 number, since 3×131031854781³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031854981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3187921 + ... + 3228761.

It is an arithmetic number, because the mean of its divisors is an integer number (10941980220).

Almost surely, 2^131031854781 is an apocalyptic number.

It is an amenable number.

131031854781 is a deficient number, since it is larger than the sum of its proper divisors (44039828739).

131031854781 is a wasteful number, since it uses less digits than its factorization.

131031854781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43036.

The product of its (nonzero) digits is 80640, while the sum is 42.

The spelling of 131031854781 in words is "one hundred thirty-one billion, thirty-one million, eight hundred fifty-four thousand, seven hundred eighty-one".