131478404 has 24 divisors (see below), whose sum is σ = 243092640. Its totient is φ = 62049024.

The previous prime is 131478379. The next prime is 131478433. The reversal of 131478404 is 404874131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18452 + ... + 24564.

It is an arithmetic number, because the mean of its divisors is an integer number (10128860).

Almost surely, 2^131478404 is an apocalyptic number.

It is an amenable number.

131478404 is a deficient number, since it is larger than the sum of its proper divisors (111614236).

131478404 is a wasteful number, since it uses less digits than its factorization.

131478404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6419 (or 6417 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 131478404 is about 11466.4032721687. The cubic root of 131478404 is about 508.4927999439.

The spelling of 131478404 in words is "one hundred thirty-one million, four hundred seventy-eight thousand, four hundred four".