131198378 has 16 divisors (see below), whose sum is σ = 204127560. Its totient is φ = 63168000.

The previous prime is 131198377. The next prime is 131198383. The reversal of 131198378 is 873891131.

It can be written as a sum of positive squares in 4 ways, for example, as 119617969 + 11580409 = 10937^2 + 3403^2 .

It is not an unprimeable number, because it can be changed into a prime (131198377) 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 7 ways as a sum of consecutive naturals, for example, 20438 + ... + 26078.

Almost surely, 2^131198378 is an apocalyptic number.

131198378 is a deficient number, since it is larger than the sum of its proper divisors (72929182).

131198378 is a wasteful number, since it uses less digits than its factorization.

131198378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6073.

The product of its digits is 36288, while the sum is 41.

The square root of 131198378 is about 11454.1860470310. The cubic root of 131198378 is about 508.1315431147.

The spelling of 131198378 in words is "one hundred thirty-one million, one hundred ninety-eight thousand, three hundred seventy-eight".