47731423 has 4 divisors (see below), whose sum is σ = 47745640. Its totient is φ = 47717208.

The previous prime is 47731399. The next prime is 47731433. The reversal of 47731423 is 32413774.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47731423 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 (47731433) 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, 1048 + ... + 9826.

It is an arithmetic number, because the mean of its divisors is an integer number (11936410).

Almost surely, 2^47731423 is an apocalyptic number.

47731423 is a deficient number, since it is larger than the sum of its proper divisors (14217).

47731423 is an equidigital number, since it uses as much as digits as its factorization.

47731423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14216.

The product of its digits is 14112, while the sum is 31.

The square root of 47731423 is about 6908.7931652352. The cubic root of 47731423 is about 362.7450215056.

The spelling of 47731423 in words is "forty-seven million, seven hundred thirty-one thousand, four hundred twenty-three".