131269785 has 8 divisors (see below), whose sum is σ = 210031680. Its totient is φ = 70010544.

The previous prime is 131269781. The next prime is 131269807. The reversal of 131269785 is 587962131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131269785 - 2² = 131269781 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (131269781) 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 7 ways as a sum of consecutive naturals, for example, 4375645 + ... + 4375674.

It is an arithmetic number, because the mean of its divisors is an integer number (26253960).

Almost surely, 2^131269785 is an apocalyptic number.

131269785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131269785 is a deficient number, since it is larger than the sum of its proper divisors (78761895).

131269785 is an equidigital number, since it uses as much as digits as its factorization.

131269785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8751327.

The product of its digits is 90720, while the sum is 42.

The square root of 131269785 is about 11457.3026930425. The cubic root of 131269785 is about 508.2237128729.

The spelling of 131269785 in words is "one hundred thirty-one million, two hundred sixty-nine thousand, seven hundred eighty-five".