320020263 has 24 divisors (see below), whose sum is σ = 468468000. Its totient is φ = 210498624.

The previous prime is 320020243. The next prime is 320020271. The reversal of 320020263 is 362020023.

It is not a de Polignac number, because 320020263 - 2⁹ = 320019751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320020243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223233 + ... + 224661.

It is an arithmetic number, because the mean of its divisors is an integer number (19519500).

Almost surely, 2^320020263 is an apocalyptic number.

320020263 is a deficient number, since it is larger than the sum of its proper divisors (148447737).

320020263 is a wasteful number, since it uses less digits than its factorization.

320020263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 320020263 is about 17889.1101791006. The cubic root of 320020263 is about 684.0048155504.

Adding to 320020263 its reverse (362020023), we get a palindrome (682040286).

The spelling of 320020263 in words is "three hundred twenty million, twenty thousand, two hundred sixty-three".