4131643 has 2 divisors, whose sum is σ = 4131644. Its totient is φ = 4131642.

The previous prime is 4131641. The next prime is 4131653. The reversal of 4131643 is 3461314.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4131643 - 2¹ = 4131641 is a prime.

Together with 4131641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4131641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2065821 + 2065822.

It is an arithmetic number, because the mean of its divisors is an integer number (2065822).

Almost surely, 2^4131643 is an apocalyptic number.

4131643 is a deficient number, since it is larger than the sum of its proper divisors (1).

4131643 is an equidigital number, since it uses as much as digits as its factorization.

4131643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 4131643 is about 2032.6443368184. The cubic root of 4131643 is about 160.4627618439.

Adding to 4131643 its reverse (3461314), we get a palindrome (7592957).

It can be divided in two parts, 4131 and 643, that added together give a palindrome (4774).

The spelling of 4131643 in words is "four million, one hundred thirty-one thousand, six hundred forty-three".