1303221003 has 24 divisors (see below), whose sum is σ = 2140227792. Its totient is φ = 700890624.

The previous prime is 1303220999. The next prime is 1303221011. The reversal of 1303221003 is 3001223031.

1303221003 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1303221003 - 2² = 1303220999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1303221083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 258250 + ... + 263247.

It is an arithmetic number, because the mean of its divisors is an integer number (89176158).

Almost surely, 2^1303221003 is an apocalyptic number.

1303221003 is a deficient number, since it is larger than the sum of its proper divisors (837006789).

1303221003 is a wasteful number, since it uses less digits than its factorization.

1303221003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521531 (or 521524 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1303221003 is about 36100.1523958002. The cubic root of 1303221003 is about 1092.2935190597.

Adding to 1303221003 its reverse (3001223031), we get a palindrome (4304444034).

The spelling of 1303221003 in words is "one billion, three hundred three million, two hundred twenty-one thousand, three".