131141787 has 24 divisors (see below), whose sum is σ = 208143936. Its totient is φ = 73191888.

The previous prime is 131141771. The next prime is 131141809. The reversal of 131141787 is 787141131.

It is not a de Polignac number, because 131141787 - 2⁴ = 131141771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131141737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4053 + ... + 16694.

It is an arithmetic number, because the mean of its divisors is an integer number (8672664).

Almost surely, 2^131141787 is an apocalyptic number.

131141787 is a deficient number, since it is larger than the sum of its proper divisors (77002149).

131141787 is a wasteful number, since it uses less digits than its factorization.

131141787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20807 (or 20800 counting only the distinct ones).

The product of its digits is 4704, while the sum is 33.

The square root of 131141787 is about 11451.7154610128. The cubic root of 131141787 is about 508.0584735944.

The spelling of 131141787 in words is "one hundred thirty-one million, one hundred forty-one thousand, seven hundred eighty-seven".