Search a number
-
+
47431 is a prime number
BaseRepresentation
bin1011100101000111
32102001201
423211013
53004211
61003331
7255166
oct134507
972051
1047431
11326aa
1223547
1318787
14133dd
15e0c1
hexb947

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

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.

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