131164631787 has 16 divisors (see below), whose sum is σ = 210389384960. Its totient is φ = 71006416992.

The previous prime is 131164631783. The next prime is 131164631789. The reversal of 131164631787 is 787136461131.

It is not a de Polignac number, because 131164631787 - 2² = 131164631783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131164631783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164366308 + ... + 164367105.

It is an arithmetic number, because the mean of its divisors is an integer number (13149336560).

Almost surely, 2^131164631787 is an apocalyptic number.

131164631787 is a deficient number, since it is larger than the sum of its proper divisors (79224753173).

131164631787 is a wasteful number, since it uses less digits than its factorization.

131164631787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328733442.

The product of its digits is 508032, while the sum is 48.

The spelling of 131164631787 in words is "one hundred thirty-one billion, one hundred sixty-four million, six hundred thirty-one thousand, seven hundred eighty-seven".