131688593 has 8 divisors (see below), whose sum is σ = 137760000. Its totient is φ = 125646048.

The previous prime is 131688553. The next prime is 131688607. The reversal of 131688593 is 395886131.

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 131688593 - 2¹⁶ = 131623057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131688503) 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, 2408 + ... + 16406.

It is an arithmetic number, because the mean of its divisors is an integer number (17220000).

Almost surely, 2^131688593 is an apocalyptic number.

It is an amenable number.

131688593 is a deficient number, since it is larger than the sum of its proper divisors (6071407).

131688593 is a wasteful number, since it uses less digits than its factorization.

131688593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14431.

The product of its digits is 155520, while the sum is 44.

The square root of 131688593 is about 11475.5650405546. The cubic root of 131688593 is about 508.7636243678.

The spelling of 131688593 in words is "one hundred thirty-one million, six hundred eighty-eight thousand, five hundred ninety-three".