47931671 has 4 divisors (see below), whose sum is σ = 48406344. Its totient is φ = 47457000.

The previous prime is 47931647. The next prime is 47931679. The reversal of 47931671 is 17613974.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47931671 - 2⁶ = 47931607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47931679) 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, 237185 + ... + 237386.

It is an arithmetic number, because the mean of its divisors is an integer number (12101586).

Almost surely, 2^47931671 is an apocalyptic number.

47931671 is a deficient number, since it is larger than the sum of its proper divisors (474673).

47931671 is a wasteful number, since it uses less digits than its factorization.

47931671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474672.

The product of its digits is 31752, while the sum is 38.

The square root of 47931671 is about 6923.2702532835. The cubic root of 47931671 is about 363.2515894062.

The spelling of 47931671 in words is "forty-seven million, nine hundred thirty-one thousand, six hundred seventy-one".