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 2^k-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, 2^43240430231 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".