8120531 has 2 divisors, whose sum is σ = 8120532. Its totient is φ = 8120530.

The previous prime is 8120527. The next prime is 8120561. The reversal of 8120531 is 1350218.

8120531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8120531 - 2² = 8120527 is a prime.

It is a super-2 number, since 2×8120531² = 131886047443922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8120561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4060265 + 4060266.

It is an arithmetic number, because the mean of its divisors is an integer number (4060266).

Almost surely, 2^8120531 is an apocalyptic number.

8120531 is a deficient number, since it is larger than the sum of its proper divisors (1).

8120531 is an equidigital number, since it uses as much as digits as its factorization.

8120531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 8120531 is about 2849.6545404663. The cubic root of 8120531 is about 200.9994224549. Note that the first 3 decimals are identical.

Adding to 8120531 its reverse (1350218), we get a palindrome (9470749).

The spelling of 8120531 in words is "eight million, one hundred twenty thousand, five hundred thirty-one".