131696365 has 8 divisors (see below), whose sum is σ = 167331960. Its totient is φ = 99159552.

The previous prime is 131696363. The next prime is 131696381. The reversal of 131696365 is 563696131.

It can be written as a sum of positive squares in 4 ways, for example, as 43072969 + 88623396 = 6563^2 + 9414^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 131696365 - 2¹ = 131696363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131696363) 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, 774600 + ... + 774769.

It is an arithmetic number, because the mean of its divisors is an integer number (20916495).

Almost surely, 2^131696365 is an apocalyptic number.

It is an amenable number.

131696365 is a deficient number, since it is larger than the sum of its proper divisors (35635595).

131696365 is a wasteful number, since it uses less digits than its factorization.

131696365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549391.

The product of its digits is 87480, while the sum is 40.

The square root of 131696365 is about 11475.9036681213. The cubic root of 131696365 is about 508.7736329114.

It can be divided in two parts, 13169636 and 5, that added together give a square (13169641 = 3629²).

The spelling of 131696365 in words is "one hundred thirty-one million, six hundred ninety-six thousand, three hundred sixty-five".