4312643 has 2 divisors, whose sum is σ = 4312644. Its totient is φ = 4312642.

The previous prime is 4312631. The next prime is 4312657. The reversal of 4312643 is 3462134.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4312643 - 2¹⁶ = 4247107 is a prime.

It is a d-powerful number, because it can be written as 4² + 3¹⁰ + 1 + 2³ + 6³ + 4¹¹ + 3¹⁰ .

It is not a weakly prime, because it can be changed into another prime (4314643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2156321 + 2156322.

It is an arithmetic number, because the mean of its divisors is an integer number (2156322).

Almost surely, 2^4312643 is an apocalyptic number.

4312643 is a deficient number, since it is larger than the sum of its proper divisors (1).

4312643 is an equidigital number, since it uses as much as digits as its factorization.

4312643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 4312643 is about 2076.6903957981. The cubic root of 4312643 is about 162.7725508962.

Adding to 4312643 its reverse (3462134), we get a palindrome (7774777).

The spelling of 4312643 in words is "four million, three hundred twelve thousand, six hundred forty-three".