131798478 has 32 divisors (see below), whose sum is σ = 317111040. Its totient is φ = 35674560.

The previous prime is 131798473. The next prime is 131798503. The reversal of 131798478 is 874897131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131798473) 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 15 ways as a sum of consecutive naturals, for example, 81783 + ... + 83378.

It is an arithmetic number, because the mean of its divisors is an integer number (9909720).

Almost surely, 2^131798478 is an apocalyptic number.

131798478 is an abundant number, since it is smaller than the sum of its proper divisors (185312562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131798478 is a wasteful number, since it uses less digits than its factorization.

131798478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165192.

The product of its digits is 338688, while the sum is 48.

The square root of 131798478 is about 11480.3518238772. The cubic root of 131798478 is about 508.9050943489.

The spelling of 131798478 in words is "one hundred thirty-one million, seven hundred ninety-eight thousand, four hundred seventy-eight".