1003320401 has 2 divisors, whose sum is σ = 1003320402. Its totient is φ = 1003320400.

The previous prime is 1003320397. The next prime is 1003320413. The reversal of 1003320401 is 1040233001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 613850176 + 389470225 = 24776^2 + 19735^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003320401 - 2² = 1003320397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1003320431) 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 as a sum of consecutive naturals, namely, 501660200 + 501660201.

It is an arithmetic number, because the mean of its divisors is an integer number (501660201).

Almost surely, 2^1003320401 is an apocalyptic number.

It is an amenable number.

1003320401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003320401 is an equidigital number, since it uses as much as digits as its factorization.

1003320401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1003320401 is about 31675.2332430244. The cubic root of 1003320401 is about 1001.1055775811.

Adding to 1003320401 its reverse (1040233001), we get a palindrome (2043553402).

The spelling of 1003320401 in words is "one billion, three million, three hundred twenty thousand, four hundred one".