131169807 has 16 divisors (see below), whose sum is σ = 205757280. Its totient is φ = 82302336.

The previous prime is 131169781. The next prime is 131169827. The reversal of 131169807 is 708961131.

It is not a de Polignac number, because 131169807 - 2⁶ = 131169743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131169827) 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 15 ways as a sum of consecutive naturals, for example, 142428 + ... + 143345.

It is an arithmetic number, because the mean of its divisors is an integer number (12859830).

Almost surely, 2^131169807 is an apocalyptic number.

131169807 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

131169807 is a deficient number, since it is larger than the sum of its proper divisors (74587473).

131169807 is a wasteful number, since it uses less digits than its factorization.

131169807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285799 (or 285793 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 131169807 is about 11452.9387931657. The cubic root of 131169807 is about 508.0946552595.

The spelling of 131169807 in words is "one hundred thirty-one million, one hundred sixty-nine thousand, eight hundred seven".