263303263 has 4 divisors (see below), whose sum is σ = 265910328. Its totient is φ = 260696200.

The previous prime is 263303251. The next prime is 263303269. The reversal of 263303263 is 362303362.

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

It is a cyclic number.

It is not a de Polignac number, because 263303263 - 2¹⁷ = 263172191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263303269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1303381 + ... + 1303582.

It is an arithmetic number, because the mean of its divisors is an integer number (66477582).

Almost surely, 2^263303263 is an apocalyptic number.

263303263 is a deficient number, since it is larger than the sum of its proper divisors (2607065).

263303263 is a wasteful number, since it uses less digits than its factorization.

263303263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607064.

The product of its (nonzero) digits is 11664, while the sum is 28.

The square root of 263303263 is about 16226.6220452687. The cubic root of 263303263 is about 640.9420233891.

Subtracting 263303263 from its reverse (362303362), we obtain a palindrome (99000099).

The spelling of 263303263 in words is "two hundred sixty-three million, three hundred three thousand, two hundred sixty-three".