8120231 has 6 divisors (see below), whose sum is σ = 9446040. Its totient is φ = 6960156.

The previous prime is 8120213. The next prime is 8120243. The reversal of 8120231 is 1320218.

It is not a de Polignac number, because 8120231 - 2²² = 3925927 is a prime.

It is a super-2 number, since 2×8120231² = 131876302986722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8120251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82811 + ... + 82908.

It is an arithmetic number, because the mean of its divisors is an integer number (1574340).

Almost surely, 2^8120231 is an apocalyptic number.

8120231 is a deficient number, since it is larger than the sum of its proper divisors (1325809).

8120231 is a wasteful number, since it uses less digits than its factorization.

8120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165733 (or 165726 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 8120231 is about 2849.6019020207. The cubic root of 8120231 is about 200.9969472239.

Adding to 8120231 its reverse (1320218), we get a palindrome (9440449).

The spelling of 8120231 in words is "eight million, one hundred twenty thousand, two hundred thirty-one".