800320531 has 4 divisors (see below), whose sum is σ = 805418272. Its totient is φ = 795222792.

The previous prime is 800320523. The next prime is 800320553. The reversal of 800320531 is 135023008.

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 800320531 - 2³ = 800320523 is a prime.

It is a super-2 number, since 2×800320531² = 1281025904680243922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (800320501) 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, 2548635 + ... + 2548948.

It is an arithmetic number, because the mean of its divisors is an integer number (201354568).

Almost surely, 2^800320531 is an apocalyptic number.

800320531 is a deficient number, since it is larger than the sum of its proper divisors (5097741).

800320531 is a wasteful number, since it uses less digits than its factorization.

800320531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097740.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 800320531 is about 28289.9369211032. The cubic root of 800320531 is about 928.4417312605.

Adding to 800320531 its reverse (135023008), we get a palindrome (935343539).

The spelling of 800320531 in words is "eight hundred million, three hundred twenty thousand, five hundred thirty-one".