263543263 has 2 divisors, whose sum is σ = 263543264. Its totient is φ = 263543262.

The previous prime is 263543249. The next prime is 263543297. The reversal of 263543263 is 362345362.

It is an a-pointer prime, because the next prime (263543297) can be obtained adding 263543263 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263543263 - 2⁹ = 263542751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263243263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131771631 + 131771632.

It is an arithmetic number, because the mean of its divisors is an integer number (131771632).

Almost surely, 2^263543263 is an apocalyptic number.

263543263 is a deficient number, since it is larger than the sum of its proper divisors (1).

263543263 is an equidigital number, since it uses as much as digits as its factorization.

263543263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 34.

The square root of 263543263 is about 16234.0156153676. The cubic root of 263543263 is about 641.1367030527.

The spelling of 263543263 in words is "two hundred sixty-three million, five hundred forty-three thousand, two hundred sixty-three".