1000320255 has 96 divisors (see below), whose sum is σ = 2022838272. Its totient is φ = 452390400.

The previous prime is 1000320193. The next prime is 1000320257. The reversal of 1000320255 is 5520230001.

It is a happy number.

It is not a de Polignac number, because 1000320255 - 2⁹ = 1000319743 is a prime.

It is a super-2 number, since 2×1000320255² = 2001281225126530050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000320257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 465714 + ... + 467856.

It is an arithmetic number, because the mean of its divisors is an integer number (21071232).

Almost surely, 2^1000320255 is an apocalyptic number.

1000320255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1000320255 is an abundant number, since it is smaller than the sum of its proper divisors (1022518017).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000320255 is a wasteful number, since it uses less digits than its factorization.

1000320255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229 (or 2226 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1000320255 is about 31627.8398724921. The cubic root of 1000320255 is about 1000.1067402728.

Adding to 1000320255 its reverse (5520230001), we get a palindrome (6520550256).

The spelling of 1000320255 in words is "one billion, three hundred twenty thousand, two hundred fifty-five".