131688355 has 4 divisors (see below), whose sum is σ = 158026032. Its totient is φ = 105350680.

The previous prime is 131688343. The next prime is 131688367. The reversal of 131688355 is 553886131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553886131 = 3167 ⋅174893.

It is an interprime number because it is at equal distance from previous prime (131688343) and next prime (131688367).

It is not a de Polignac number, because 131688355 - 2¹³ = 131680163 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 13168831 + ... + 13168840.

It is an arithmetic number, because the mean of its divisors is an integer number (39506508).

Almost surely, 2^131688355 is an apocalyptic number.

131688355 is a deficient number, since it is larger than the sum of its proper divisors (26337677).

131688355 is an equidigital number, since it uses as much as digits as its factorization.

131688355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26337676.

The product of its digits is 86400, while the sum is 40.

The square root of 131688355 is about 11475.5546706902. The cubic root of 131688355 is about 508.7633178724.

The spelling of 131688355 in words is "one hundred thirty-one million, six hundred eighty-eight thousand, three hundred fifty-five".