263855323 has 4 divisors (see below), whose sum is σ = 263983720. Its totient is φ = 263726928.

The previous prime is 263855303. The next prime is 263855341. The reversal of 263855323 is 323558362.

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 263855323 - 2¹³ = 263847131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263855303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61065 + ... + 65242.

It is an arithmetic number, because the mean of its divisors is an integer number (65995930).

Almost surely, 2^263855323 is an apocalyptic number.

263855323 is a deficient number, since it is larger than the sum of its proper divisors (128397).

263855323 is a wasteful number, since it uses less digits than its factorization.

263855323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128396.

The product of its digits is 129600, while the sum is 37.

The square root of 263855323 is about 16243.6240722322. The cubic root of 263855323 is about 641.3896586152.

The spelling of 263855323 in words is "two hundred sixty-three million, eight hundred fifty-five thousand, three hundred twenty-three".