131993794 has 8 divisors (see below), whose sum is σ = 199176768. Its totient is φ = 65601540.

The previous prime is 131993791. The next prime is 131993833. The reversal of 131993794 is 497399131.

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

It is not an unprimeable number, because it can be changed into a prime (131993791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197262 + ... + 197929.

It is an arithmetic number, because the mean of its divisors is an integer number (24897096).

Almost surely, 2^131993794 is an apocalyptic number.

131993794 is a deficient number, since it is larger than the sum of its proper divisors (67182974).

131993794 is a wasteful number, since it uses less digits than its factorization.

131993794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395360.

The product of its digits is 183708, while the sum is 46.

The square root of 131993794 is about 11488.8552084183. The cubic root of 131993794 is about 509.1563573614.

The spelling of 131993794 in words is "one hundred thirty-one million, nine hundred ninety-three thousand, seven hundred ninety-four".