263317323 has 16 divisors (see below), whose sum is σ = 354195072. Its totient is φ = 174000000.

The previous prime is 263317321. The next prime is 263317343. The reversal of 263317323 is 323713362.

It is a happy number.

It is not a de Polignac number, because 263317323 - 2¹ = 263317321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263317321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180748 + ... + 182198.

It is an arithmetic number, because the mean of its divisors is an integer number (22137192).

Almost surely, 2^263317323 is an apocalyptic number.

263317323 is a deficient number, since it is larger than the sum of its proper divisors (90877749).

263317323 is a wasteful number, since it uses less digits than its factorization.

263317323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946.

The product of its digits is 13608, while the sum is 30.

The square root of 263317323 is about 16227.0552781458. The cubic root of 263317323 is about 640.9534316342.

The spelling of 263317323 in words is "two hundred sixty-three million, three hundred seventeen thousand, three hundred twenty-three".