8320531 has 8 divisors (see below), whose sum is σ = 8848224. Its totient is φ = 7797120.

The previous prime is 8320519. The next prime is 8320541. The reversal of 8320531 is 1350238.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8320531 is a prime.

It is a super-2 number, since 2×8320531² = 138462472243922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8320541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3541 + ... + 5401.

It is an arithmetic number, because the mean of its divisors is an integer number (1106028).

Almost surely, 2^8320531 is an apocalyptic number.

8320531 is a deficient number, since it is larger than the sum of its proper divisors (527693).

8320531 is a wasteful number, since it uses less digits than its factorization.

8320531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141.

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

The square root of 8320531 is about 2884.5330644664. The cubic root of 8320531 is about 202.6361914708.

Adding to 8320531 its reverse (1350238), we get a palindrome (9670769).

The spelling of 8320531 in words is "eight million, three hundred twenty thousand, five hundred thirty-one".