263471317 has 2 divisors, whose sum is σ = 263471318. Its totient is φ = 263471316.

The previous prime is 263471249. The next prime is 263471333. The reversal of 263471317 is 713174362.

263471317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132917841 + 130553476 = 11529^2 + 11426^2 .

It is a cyclic number.

It is not a de Polignac number, because 263471317 - 2⁷ = 263471189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263471357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131735658 + 131735659.

It is an arithmetic number, because the mean of its divisors is an integer number (131735659).

Almost surely, 2^263471317 is an apocalyptic number.

It is an amenable number.

263471317 is a deficient number, since it is larger than the sum of its proper divisors (1).

263471317 is an equidigital number, since it uses as much as digits as its factorization.

263471317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 263471317 is about 16231.7995613549. The cubic root of 263471317 is about 641.0783553658.

The spelling of 263471317 in words is "two hundred sixty-three million, four hundred seventy-one thousand, three hundred seventeen".