131478406 has 8 divisors (see below), whose sum is σ = 197331264. Its totient is φ = 65701320.

The previous prime is 131478379. The next prime is 131478433. The reversal of 131478406 is 604874131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131478379) and next prime (131478433).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14385 + ... + 21676.

It is an arithmetic number, because the mean of its divisors is an integer number (24666408).

Almost surely, 2^131478406 is an apocalyptic number.

131478406 is a deficient number, since it is larger than the sum of its proper divisors (65852858).

131478406 is a wasteful number, since it uses less digits than its factorization.

131478406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37886.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 131478406 is about 11466.4033593800. The cubic root of 131478406 is about 508.4928025223.

The spelling of 131478406 in words is "one hundred thirty-one million, four hundred seventy-eight thousand, four hundred six".