131194117 has 8 divisors (see below), whose sum is σ = 139107672. Its totient is φ = 123302400.

The previous prime is 131194097. The next prime is 131194153. The reversal of 131194117 is 711491131.

It is a Cunningham number, because it is equal to 11454²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 131194116 = 1^2 + 11454^2 .

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 131194117 - 2²³ = 122805509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131194157) 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, 7867 + ... + 18007.

It is an arithmetic number, because the mean of its divisors is an integer number (17388459).

Almost surely, 2^131194117 is an apocalyptic number.

131194117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

131194117 is a deficient number, since it is larger than the sum of its proper divisors (7913555).

131194117 is a wasteful number, since it uses less digits than its factorization.

131194117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10919.

The product of its digits is 756, while the sum is 28.

The square root of 131194117 is about 11454.0000436529. Note that the first 4 decimals coincide. The cubic root of 131194117 is about 508.1260421017.

The spelling of 131194117 in words is "one hundred thirty-one million, one hundred ninety-four thousand, one hundred seventeen".