1323312313 has 2 divisors, whose sum is σ = 1323312314. Its totient is φ = 1323312312.

The previous prime is 1323312301. The next prime is 1323312329. The reversal of 1323312313 is 3132133231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 803609104 + 519703209 = 28348^2 + 22797^2 .

It is an emirp because it is prime and its reverse (3132133231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323312313 - 2⁵ = 1323312281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323312373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661656156 + 661656157.

It is an arithmetic number, because the mean of its divisors is an integer number (661656157).

Almost surely, 2^1323312313 is an apocalyptic number.

It is an amenable number.

1323312313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323312313 is an equidigital number, since it uses as much as digits as its factorization.

1323312313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 22.

The square root of 1323312313 is about 36377.3598959573. The cubic root of 1323312313 is about 1097.8780893355.

Adding to 1323312313 its reverse (3132133231), we get a palindrome (4455445544).

The spelling of 1323312313 in words is "one billion, three hundred twenty-three million, three hundred twelve thousand, three hundred thirteen".