131978348 has 24 divisors (see below), whose sum is σ = 234991680. Its totient is φ = 64846080.

The previous prime is 131978317. The next prime is 131978359. The reversal of 131978348 is 843879131.

It is a junction number, because it is equal to n+sod(n) for n = 131978299 and 131978308.

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 7 ways as a sum of consecutive naturals, for example, 75290 + ... + 77022.

It is an arithmetic number, because the mean of its divisors is an integer number (9791320).

Almost surely, 2^131978348 is an apocalyptic number.

It is an amenable number.

131978348 is a deficient number, since it is larger than the sum of its proper divisors (103013332).

131978348 is a wasteful number, since it uses less digits than its factorization.

131978348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057 (or 2055 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 131978348 is about 11488.1829720805. The cubic root of 131978348 is about 509.1364959835.

The spelling of 131978348 in words is "one hundred thirty-one million, nine hundred seventy-eight thousand, three hundred forty-eight".