1213365323 has 2 divisors, whose sum is σ = 1213365324. Its totient is φ = 1213365322.

The previous prime is 1213365319. The next prime is 1213365343. The reversal of 1213365323 is 3235633121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213365323 - 2² = 1213365319 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213365343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606682661 + 606682662.

It is an arithmetic number, because the mean of its divisors is an integer number (606682662).

Almost surely, 2^1213365323 is an apocalyptic number.

1213365323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213365323 is an equidigital number, since it uses as much as digits as its factorization.

1213365323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 29.

The square root of 1213365323 is about 34833.3937910161. The cubic root of 1213365323 is about 1066.5892274619.

Adding to 1213365323 its reverse (3235633121), we get a palindrome (4448998444).

The spelling of 1213365323 in words is "one billion, two hundred thirteen million, three hundred sixty-five thousand, three hundred twenty-three".