3231643 has 2 divisors, whose sum is σ = 3231644. Its totient is φ = 3231642.

The previous prime is 3231619. The next prime is 3231667. The reversal of 3231643 is 3461323.

It is a balanced prime because it is at equal distance from previous prime (3231619) and next prime (3231667).

It is a cyclic number.

It is not a de Polignac number, because 3231643 - 2⁹ = 3231131 is a prime.

It is equal to p₂₃₂₃₄₈ and since 3231643 and 232348 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (3231143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1615821 + 1615822.

It is an arithmetic number, because the mean of its divisors is an integer number (1615822).

Almost surely, 2^3231643 is an apocalyptic number.

3231643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3231643 is an equidigital number, since it uses as much as digits as its factorization.

3231643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 22.

The square root of 3231643 is about 1797.6771122757. The cubic root of 3231643 is about 147.8453918685.

Adding to 3231643 its reverse (3461323), we get a palindrome (6692966).

The spelling of 3231643 in words is "three million, two hundred thirty-one thousand, six hundred forty-three".