Search a number
-
+
43240430231 is a prime number
BaseRepresentation
bin101000010001010101…
…001001101010010111
311010121111111110002222
4220101111021222113
51202024022231411
631510412252555
73060352410155
oct502125115227
9133544443088
1043240430231
111737a106259
12846917115b
1341015086bb
142142abc3d5
1511d121e4db
hexa11549a97

43240430231 has 2 divisors, whose sum is σ = 43240430232. Its totient is φ = 43240430230.

The previous prime is 43240430209. The next prime is 43240430267. The reversal of 43240430231 is 13203404234.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-43240430231 is a prime.

It is a super-2 number, since 2×432404302312 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43240430231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43240430731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620215115 + 21620215116.

It is an arithmetic number, because the mean of its divisors is an integer number (21620215116).

Almost surely, 243240430231 is an apocalyptic number.

43240430231 is a deficient number, since it is larger than the sum of its proper divisors (1).

43240430231 is an equidigital number, since it uses as much as digits as its factorization.

43240430231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 43240430231 its reverse (13203404234), we get a palindrome (56443834465).

The spelling of 43240430231 in words is "forty-three billion, two hundred forty million, four hundred thirty thousand, two hundred thirty-one".