131336385 has 16 divisors (see below), whose sum is σ = 214104384. Its totient is φ = 68724032.

The previous prime is 131336383. The next prime is 131336431. The reversal of 131336385 is 583633131.

It is a cyclic number.

It is not a de Polignac number, because 131336385 - 2¹ = 131336383 is a prime.

It is a Smith number, since the sum of its digits (33) 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 (131336383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81807 + ... + 83396.

It is an arithmetic number, because the mean of its divisors is an integer number (13381524).

Almost surely, 2^131336385 is an apocalyptic number.

131336385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131336385 is a deficient number, since it is larger than the sum of its proper divisors (82767999).

131336385 is a wasteful number, since it uses less digits than its factorization.

131336385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165264.

The product of its digits is 19440, while the sum is 33.

The square root of 131336385 is about 11460.2087677319. The cubic root of 131336385 is about 508.3096477960.

The spelling of 131336385 in words is "one hundred thirty-one million, three hundred thirty-six thousand, three hundred eighty-five".