1213323343 has 2 divisors, whose sum is σ = 1213323344. Its totient is φ = 1213323342.

The previous prime is 1213323247. The next prime is 1213323359. The reversal of 1213323343 is 3433233121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213323343 - 2¹⁷ = 1213192271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213323143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606661671 + 606661672.

It is an arithmetic number, because the mean of its divisors is an integer number (606661672).

Almost surely, 2^1213323343 is an apocalyptic number.

1213323343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213323343 is an equidigital number, since it uses as much as digits as its factorization.

1213323343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 25.

The square root of 1213323343 is about 34832.7912031178. The cubic root of 1213323343 is about 1066.5769267059.

Adding to 1213323343 its reverse (3433233121), we get a palindrome (4646556464).

The spelling of 1213323343 in words is "one billion, two hundred thirteen million, three hundred twenty-three thousand, three hundred forty-three".