1303342321 has 4 divisors (see below), whose sum is σ = 1315299700. Its totient is φ = 1291384944.

The previous prime is 1303342319. The next prime is 1303342333. The reversal of 1303342321 is 1232433031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1232433031 = 113 ⋅10906487.

It can be written as a sum of positive squares in 2 ways, for example, as 609546721 + 693795600 = 24689^2 + 26340^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303342321 - 2¹ = 1303342319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303342292 and 1303342301.

It is not an unprimeable number, because it can be changed into a prime (1303342351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5978526 + ... + 5978743.

It is an arithmetic number, because the mean of its divisors is an integer number (328824925).

Almost surely, 2^1303342321 is an apocalyptic number.

It is an amenable number.

1303342321 is a deficient number, since it is larger than the sum of its proper divisors (11957379).

1303342321 is a wasteful number, since it uses less digits than its factorization.

1303342321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11957378.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 1303342321 is about 36101.8326543127. The cubic root of 1303342321 is about 1092.3274121991.

Adding to 1303342321 its reverse (1232433031), we get a palindrome (2535775352).

The spelling of 1303342321 in words is "one billion, three hundred three million, three hundred forty-two thousand, three hundred twenty-one".