321143 has 2 divisors, whose sum is σ = 321144. Its totient is φ = 321142.

The previous prime is 321109. The next prime is 321163. The reversal of 321143 is 341123.

It is a strong prime.

It is an emirp because it is prime and its reverse (341123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321143 - 2¹⁰ = 320119 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 321143.

It is not a weakly prime, because it can be changed into another prime (321163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160571 + 160572.

It is an arithmetic number, because the mean of its divisors is an integer number (160572).

2³²¹¹⁴³ is an apocalyptic number.

321143 is a deficient number, since it is larger than the sum of its proper divisors (1).

321143 is an equidigital number, since it uses as much as digits as its factorization.

321143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 14.

The square root of 321143 is about 566.6948032230. The cubic root of 321143 is about 68.4803787018.

Adding to 321143 its reverse (341123), we get a palindrome (662266).

It can be divided in two parts, 321 and 143, that added together give a palindrome (464).

The spelling of 321143 in words is "three hundred twenty-one thousand, one hundred forty-three", and thus it is an iban number.