1313650002603 has 4 divisors (see below), whose sum is σ = 1751533336808. Its totient is φ = 875766668400.

The previous prime is 1313650002593. The next prime is 1313650002649. The reversal of 1313650002603 is 3062000563131.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1313650002603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313650002103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218941667098 + ... + 218941667103.

It is an arithmetic number, because the mean of its divisors is an integer number (437883334202).

Almost surely, 2^{1313650002603} is an apocalyptic number.

1313650002603 is a deficient number, since it is larger than the sum of its proper divisors (437883334205).

1313650002603 is an equidigital number, since it uses as much as digits as its factorization.

1313650002603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437883334204.

The product of its (nonzero) digits is 9720, while the sum is 30.

Adding to 1313650002603 its reverse (3062000563131), we get a palindrome (4375650565734).

The spelling of 1313650002603 in words is "one trillion, three hundred thirteen billion, six hundred fifty million, two thousand, six hundred three".