1323143293 has 2 divisors, whose sum is σ = 1323143294. Its totient is φ = 1323143292.

The previous prime is 1323143279. The next prime is 1323143317. The reversal of 1323143293 is 3923413231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 955922724 + 367220569 = 30918^2 + 19163^2 .

It is an emirp because it is prime and its reverse (3923413231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323143293 - 2¹⁷ = 1323012221 is a prime.

It is a super-3 number, since 3×1323143293³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323143243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661571646 + 661571647.

It is an arithmetic number, because the mean of its divisors is an integer number (661571647).

Almost surely, 2^1323143293 is an apocalyptic number.

It is an amenable number.

1323143293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323143293 is an equidigital number, since it uses as much as digits as its factorization.

1323143293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 31.

The square root of 1323143293 is about 36375.0366735210. The cubic root of 1323143293 is about 1097.8313452037.

The spelling of 1323143293 in words is "one billion, three hundred twenty-three million, one hundred forty-three thousand, two hundred ninety-three".