47431 has 2 divisors, whose sum is σ = 47432. Its totient is φ = 47430.

The previous prime is 47419. The next prime is 47441. The reversal of 47431 is 13474.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47431 - 2⁷ = 47303 is a prime.

It is a super-2 number, since 2×47431² = 4499399522, which contains 22 as substring.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 47399 and 47408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23715 + 23716.

It is an arithmetic number, because the mean of its divisors is an integer number (23716).

2⁴⁷⁴³¹ is an apocalyptic number.

47431 is a deficient number, since it is larger than the sum of its proper divisors (1).

47431 is an equidigital number, since it uses as much as digits as its factorization.

47431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 19.

The square root of 47431 is about 217.7865927921. The cubic root of 47431 is about 36.1982376562.

It can be divided in two parts, 474 and 31, that added together give a palindrome (505).

The spelling of 47431 in words is "forty-seven thousand, four hundred thirty-one".