1641323 has 2 divisors, whose sum is σ = 1641324. Its totient is φ = 1641322.

The previous prime is 1641301. The next prime is 1641329. The reversal of 1641323 is 3231461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1641323 - 2¹⁰ = 1640299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1641295 and 1641304.

It is not a weakly prime, because it can be changed into another prime (1641329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820661 + 820662.

It is an arithmetic number, because the mean of its divisors is an integer number (820662).

2^1641323 is an apocalyptic number.

1641323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641323 is an equidigital number, since it uses as much as digits as its factorization.

1641323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 20.

The square root of 1641323 is about 1281.1412880709. The cubic root of 1641323 is about 117.9590732337.

Adding to 1641323 its reverse (3231461), we get a palindrome (4872784).

The spelling of 1641323 in words is "one million, six hundred forty-one thousand, three hundred twenty-three".