1263326203 has 2 divisors, whose sum is σ = 1263326204. Its totient is φ = 1263326202.

The previous prime is 1263326201. The next prime is 1263326237. The reversal of 1263326203 is 3026233621.

It is a weak prime.

It is an emirp because it is prime and its reverse (3026233621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1263326203 - 2¹ = 1263326201 is a prime.

Together with 1263326201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1263326201) 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, 631663101 + 631663102.

It is an arithmetic number, because the mean of its divisors is an integer number (631663102).

Almost surely, 2^1263326203 is an apocalyptic number.

1263326203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263326203 is an equidigital number, since it uses as much as digits as its factorization.

1263326203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 1263326203 is about 35543.3003954332. The cubic root of 1263326203 is about 1081.0318792955.

Adding to 1263326203 its reverse (3026233621), we get a palindrome (4289559824).

The spelling of 1263326203 in words is "one billion, two hundred sixty-three million, three hundred twenty-six thousand, two hundred three".