131267686 has 16 divisors (see below), whose sum is σ = 214985808. Its totient is φ = 59616000.

The previous prime is 131267683. The next prime is 131267687. The reversal of 131267686 is 686762131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131267683) 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 7 ways as a sum of consecutive naturals, for example, 37966 + ... + 41278.

It is an arithmetic number, because the mean of its divisors is an integer number (13436613).

Almost surely, 2^131267686 is an apocalyptic number.

131267686 is a deficient number, since it is larger than the sum of its proper divisors (83718122).

131267686 is a wasteful number, since it uses less digits than its factorization.

131267686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127.

The product of its digits is 72576, while the sum is 40.

The square root of 131267686 is about 11457.2110917099. The cubic root of 131267686 is about 508.2210040310.

The spelling of 131267686 in words is "one hundred thirty-one million, two hundred sixty-seven thousand, six hundred eighty-six".