131665116 has 24 divisors (see below), whose sum is σ = 335147904. Its totient is φ = 39898480.

The previous prime is 131665111. The next prime is 131665123. The reversal of 131665116 is 611566131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131665111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498600 + ... + 498863.

It is an arithmetic number, because the mean of its divisors is an integer number (13964496).

Almost surely, 2^131665116 is an apocalyptic number.

It is an amenable number.

131665116 is an abundant number, since it is smaller than the sum of its proper divisors (203482788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131665116 is a wasteful number, since it uses less digits than its factorization.

131665116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997481 (or 997479 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 131665116 is about 11474.5420823665. The cubic root of 131665116 is about 508.7333890143.

The spelling of 131665116 in words is "one hundred thirty-one million, six hundred sixty-five thousand, one hundred sixteen".