1323154643 has 2 divisors, whose sum is σ = 1323154644. Its totient is φ = 1323154642.

The previous prime is 1323154589. The next prime is 1323154681. The reversal of 1323154643 is 3464513231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1323154643 - 2⁶ = 1323154579 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323157643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661577321 + 661577322.

It is an arithmetic number, because the mean of its divisors is an integer number (661577322).

Almost surely, 2^1323154643 is an apocalyptic number.

1323154643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323154643 is an equidigital number, since it uses as much as digits as its factorization.

1323154643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The square root of 1323154643 is about 36375.1926867749. The cubic root of 1323154643 is about 1097.8344842817.

Adding to 1323154643 its reverse (3464513231), we get a palindrome (4787667874).

The spelling of 1323154643 in words is "one billion, three hundred twenty-three million, one hundred fifty-four thousand, six hundred forty-three".