47631813 has 8 divisors (see below), whose sum is σ = 63541728. Its totient is φ = 31738224.

The previous prime is 47631811. The next prime is 47631823. The reversal of 47631813 is 31813674.

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

It is not a de Polignac number, because 47631813 - 2¹ = 47631811 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47631811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7131 + ... + 12087.

It is an arithmetic number, because the mean of its divisors is an integer number (7942716).

Almost surely, 2^47631813 is an apocalyptic number.

It is an amenable number.

47631813 is a deficient number, since it is larger than the sum of its proper divisors (15909915).

47631813 is a wasteful number, since it uses less digits than its factorization.

47631813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8163.

The product of its digits is 12096, while the sum is 33.

The square root of 47631813 is about 6901.5804711675. The cubic root of 47631813 is about 362.4925100315.

The spelling of 47631813 in words is "forty-seven million, six hundred thirty-one thousand, eight hundred thirteen".