47131806 has 8 divisors (see below), whose sum is σ = 94263624. Its totient is φ = 15710600.

The previous prime is 47131801. The next prime is 47131813. The reversal of 47131806 is 60813174.

It is a happy number.

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

47131806 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47131801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3927645 + ... + 3927656.

It is an arithmetic number, because the mean of its divisors is an integer number (11782953).

Almost surely, 2^47131806 is an apocalyptic number.

47131806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

47131806 is a wasteful number, since it uses less digits than its factorization.

47131806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7855306.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 47131806 is about 6865.2608107777. The cubic root of 47131806 is about 361.2196441649.

The spelling of 47131806 in words is "forty-seven million, one hundred thirty-one thousand, eight hundred six".