1263563303 has 2 divisors, whose sum is σ = 1263563304. Its totient is φ = 1263563302.

The previous prime is 1263563281. The next prime is 1263563311. The reversal of 1263563303 is 3033653621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1263563303 - 2¹⁸ = 1263301159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1263563303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263563383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631781651 + 631781652.

It is an arithmetic number, because the mean of its divisors is an integer number (631781652).

Almost surely, 2^1263563303 is an apocalyptic number.

1263563303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263563303 is an equidigital number, since it uses as much as digits as its factorization.

1263563303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 32.

The square root of 1263563303 is about 35546.6356073258. The cubic root of 1263563303 is about 1081.0995041166.

The spelling of 1263563303 in words is "one billion, two hundred sixty-three million, five hundred sixty-three thousand, three hundred three".