131803765 has 16 divisors (see below), whose sum is σ = 160351488. Its totient is φ = 103995136.

The previous prime is 131803717. The next prime is 131803783. The reversal of 131803765 is 567308131.

It is a cyclic number.

It is not a de Polignac number, because 131803765 - 2¹¹ = 131801717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131803765.

It is a congruent number.

It is an unprimeable number.

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, 148152 + ... + 149038.

It is an arithmetic number, because the mean of its divisors is an integer number (10021968).

Almost surely, 2^131803765 is an apocalyptic number.

It is an amenable number.

131803765 is a deficient number, since it is larger than the sum of its proper divisors (28547723).

131803765 is a wasteful number, since it uses less digits than its factorization.

131803765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 131803765 is about 11480.5820845461. The cubic root of 131803765 is about 508.9118990437.

The spelling of 131803765 in words is "one hundred thirty-one million, eight hundred three thousand, seven hundred sixty-five".