1303221063 has 4 divisors (see below), whose sum is σ = 1737628088. Its totient is φ = 868814040.

The previous prime is 1303221061. The next prime is 1303221083. The reversal of 1303221063 is 3601223031.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1303221063 - 2¹ = 1303221061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303221061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217203508 + ... + 217203513.

It is an arithmetic number, because the mean of its divisors is an integer number (434407022).

Almost surely, 2^1303221063 is an apocalyptic number.

1303221063 is a deficient number, since it is larger than the sum of its proper divisors (434407025).

1303221063 is an equidigital number, since it uses as much as digits as its factorization.

1303221063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434407024.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1303221063 is about 36100.1532268216. The cubic root of 1303221063 is about 1092.2935358227.

Adding to 1303221063 its reverse (3601223031), we get a palindrome (4904444094).

The spelling of 1303221063 in words is "one billion, three hundred three million, two hundred twenty-one thousand, sixty-three".