1003320313 has 2 divisors, whose sum is σ = 1003320314. Its totient is φ = 1003320312.

The previous prime is 1003320299. The next prime is 1003320317. The reversal of 1003320313 is 3130233001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 950365584 + 52954729 = 30828^2 + 7277^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003320313 - 2²¹ = 1001223161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1003320317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501660156 + 501660157.

It is an arithmetic number, because the mean of its divisors is an integer number (501660157).

Almost surely, 2^1003320313 is an apocalyptic number.

It is an amenable number.

1003320313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003320313 is an equidigital number, since it uses as much as digits as its factorization.

1003320313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 1003320313 is about 31675.2318539265. The cubic root of 1003320313 is about 1001.1055483125.

Adding to 1003320313 its reverse (3130233001), we get a palindrome (4133553314).

The spelling of 1003320313 in words is "one billion, three million, three hundred twenty thousand, three hundred thirteen".