1343252321 has 2 divisors, whose sum is σ = 1343252322. Its totient is φ = 1343252320.

The previous prime is 1343252311. The next prime is 1343252327. The reversal of 1343252321 is 1232523431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1333710400 + 9541921 = 36520^2 + 3089^2 .

It is a cyclic number.

It is not a de Polignac number, because 1343252321 - 2¹⁴ = 1343235937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1343252327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671626160 + 671626161.

It is an arithmetic number, because the mean of its divisors is an integer number (671626161).

Almost surely, 2^1343252321 is an apocalyptic number.

It is an amenable number.

1343252321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343252321 is an equidigital number, since it uses as much as digits as its factorization.

1343252321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 1343252321 is about 36650.4068326669. The cubic root of 1343252321 is about 1103.3649907604.

Adding to 1343252321 its reverse (1232523431), we get a palindrome (2575775752).

The spelling of 1343252321 in words is "one billion, three hundred forty-three million, two hundred fifty-two thousand, three hundred twenty-one".