4340431243 has 2 divisors, whose sum is σ = 4340431244. Its totient is φ = 4340431242.

The previous prime is 4340431217. The next prime is 4340431321. The reversal of 4340431243 is 3421340434.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4340431243 is a prime.

It is not a weakly prime, because it can be changed into another prime (4340401243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2170215621 + 2170215622.

It is an arithmetic number, because the mean of its divisors is an integer number (2170215622).

Almost surely, 2^4340431243 is an apocalyptic number.

4340431243 is a deficient number, since it is larger than the sum of its proper divisors (1).

4340431243 is an equidigital number, since it uses as much as digits as its factorization.

4340431243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 4340431243 is about 65881.9492956910. The cubic root of 4340431243 is about 1631.2140757335.

Adding to 4340431243 its reverse (3421340434), we get a palindrome (7761771677).

It can be divided in two parts, 43404 and 31243, that added together give a palindrome (74647).

The spelling of 4340431243 in words is "four billion, three hundred forty million, four hundred thirty-one thousand, two hundred forty-three".