131122431194 has 8 divisors (see below), whose sum is σ = 197179072788. Its totient is φ = 65396073600.

The previous prime is 131122431169. The next prime is 131122431199. The reversal of 131122431194 is 491134221131.

It can be written as a sum of positive squares in 2 ways, for example, as 130492170169 + 630261025 = 361237^2 + 25105^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 131122431194.

It is not an unprimeable number, because it can be changed into a prime (131122431199) 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 3 ways as a sum of consecutive naturals, for example, 82570007 + ... + 82571594.

Almost surely, 2^131122431194 is an apocalyptic number.

131122431194 is a deficient number, since it is larger than the sum of its proper divisors (66056641594).

131122431194 is a wasteful number, since it uses less digits than its factorization.

131122431194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165142000.

The product of its digits is 5184, while the sum is 32.

The spelling of 131122431194 in words is "one hundred thirty-one billion, one hundred twenty-two million, four hundred thirty-one thousand, one hundred ninety-four".