8231121 has 6 divisors (see below), whose sum is σ = 11889410. Its totient is φ = 5487408.

The previous prime is 8231107. The next prime is 8231137. The reversal of 8231121 is 1211328.

It can be written as a sum of positive squares in only one way, i.e., 7096896 + 1134225 = 2664^2 + 1065^2 .

It is not a de Polignac number, because 8231121 - 2⁹ = 8230609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8231094 and 8231103.

It is not an unprimeable number, because it can be changed into a prime (8231021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 457276 + ... + 457293.

Almost surely, 2^8231121 is an apocalyptic number.

It is an amenable number.

8231121 is a deficient number, since it is larger than the sum of its proper divisors (3658289).

8231121 is a wasteful number, since it uses less digits than its factorization.

8231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914575 (or 914572 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 8231121 is about 2868.9930289215. The cubic root of 8231121 is about 201.9077528674.

Adding to 8231121 its reverse (1211328), we get a palindrome (9442449).

The spelling of 8231121 in words is "eight million, two hundred thirty-one thousand, one hundred twenty-one".