1323130439 has 2 divisors, whose sum is σ = 1323130440. Its totient is φ = 1323130438.

The previous prime is 1323130429. The next prime is 1323130441. The reversal of 1323130439 is 9340313231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1323130439 - 2²⁰ = 1322081863 is a prime.

It is a super-4 number, since 4×1323130439⁴ (a number of 38 digits) contains 4444 as substring.

Together with 1323130441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323130429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661565219 + 661565220.

It is an arithmetic number, because the mean of its divisors is an integer number (661565220).

Almost surely, 2^1323130439 is an apocalyptic number.

1323130439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323130439 is an equidigital number, since it uses as much as digits as its factorization.

1323130439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 1323130439 is about 36374.8599859848. The cubic root of 1323130439 is about 1097.8277901416.

The spelling of 1323130439 in words is "one billion, three hundred twenty-three million, one hundred thirty thousand, four hundred thirty-nine".