1323143 has 2 divisors, whose sum is σ = 1323144. Its totient is φ = 1323142.

The previous prime is 1323139. The next prime is 1323149. The reversal of 1323143 is 3413231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1323143 - 2² = 1323139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661571 + 661572.

It is an arithmetic number, because the mean of its divisors is an integer number (661572).

2^1323143 is an apocalyptic number.

1323143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323143 is an equidigital number, since it uses as much as digits as its factorization.

1323143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 17.

The square root of 1323143 is about 1150.2795312445. The cubic root of 1323143 is about 109.7831264168.

Adding to 1323143 its reverse (3413231), we get a palindrome (4736374).

The spelling of 1323143 in words is "one million, three hundred twenty-three thousand, one hundred forty-three".