131185493 has 8 divisors (see below), whose sum is σ = 133249536. Its totient is φ = 129127600.

The previous prime is 131185489. The next prime is 131185501. The reversal of 131185493 is 394581131.

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 131185493 - 2² = 131185489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131185423) 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, 60203 + ... + 62343.

It is an arithmetic number, because the mean of its divisors is an integer number (16656192).

Almost surely, 2^131185493 is an apocalyptic number.

It is an amenable number.

131185493 is a deficient number, since it is larger than the sum of its proper divisors (2064043).

131185493 is an equidigital number, since it uses as much as digits as its factorization.

131185493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075.

The product of its digits is 12960, while the sum is 35.

The square root of 131185493 is about 11453.6235750962. The cubic root of 131185493 is about 508.1149080277.

The spelling of 131185493 in words is "one hundred thirty-one million, one hundred eighty-five thousand, four hundred ninety-three".