1320002603 has 2 divisors, whose sum is σ = 1320002604. Its totient is φ = 1320002602.

The previous prime is 1320002527. The next prime is 1320002609. The reversal of 1320002603 is 3062000231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320002603 - 2²⁶ = 1252893739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320002609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660001301 + 660001302.

It is an arithmetic number, because the mean of its divisors is an integer number (660001302).

Almost surely, 2^1320002603 is an apocalyptic number.

1320002603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320002603 is an equidigital number, since it uses as much as digits as its factorization.

1320002603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1320002603 is about 36331.8400717607. The cubic root of 1320002603 is about 1096.9620315442.

Adding to 1320002603 its reverse (3062000231), we get a palindrome (4382002834).

The spelling of 1320002603 in words is "one billion, three hundred twenty million, two thousand, six hundred three".