131887773 has 12 divisors (see below), whose sum is σ = 198787680. Its totient is φ = 84102216.

The previous prime is 131887753. The next prime is 131887783. The reversal of 131887773 is 377788131.

It is not a de Polignac number, because 131887773 - 2⁶ = 131887709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131887753) 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 11 ways as a sum of consecutive naturals, for example, 318363 + ... + 318776.

It is an arithmetic number, because the mean of its divisors is an integer number (16565640).

Almost surely, 2^131887773 is an apocalyptic number.

It is an amenable number.

131887773 is a deficient number, since it is larger than the sum of its proper divisors (66899907).

131887773 is a wasteful number, since it uses less digits than its factorization.

131887773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637168 (or 637165 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 131887773 is about 11484.2402012497. The cubic root of 131887773 is about 509.0199981078.

The spelling of 131887773 in words is "one hundred thirty-one million, eight hundred eighty-seven thousand, seven hundred seventy-three".