6631603103 has 2 divisors, whose sum is σ = 6631603104. Its totient is φ = 6631603102.

The previous prime is 6631603081. The next prime is 6631603141. The reversal of 6631603103 is 3013061366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6631603103 - 2²⁰ = 6630554527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6631603903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315801551 + 3315801552.

It is an arithmetic number, because the mean of its divisors is an integer number (3315801552).

Almost surely, 2^6631603103 is an apocalyptic number.

6631603103 is a deficient number, since it is larger than the sum of its proper divisors (1).

6631603103 is an equidigital number, since it uses as much as digits as its factorization.

6631603103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 6631603103 is about 81434.6554177028. The cubic root of 6631603103 is about 1878.7666483283.

Adding to 6631603103 its reverse (3013061366), we get a palindrome (9644664469).

The spelling of 6631603103 in words is "six billion, six hundred thirty-one million, six hundred three thousand, one hundred three".