8312121 has 12 divisors (see below), whose sum is σ = 12032020. Its totient is φ = 5529600.

The previous prime is 8312119. The next prime is 8312137. The reversal of 8312121 is 1212138.

It can be written as a sum of positive squares in 2 ways, for example, as 1022121 + 7290000 = 1011^2 + 2700^2 .

It is not a de Polignac number, because 8312121 - 2¹ = 8312119 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8312094 and 8312103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8312191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6321 + ... + 7521.

Almost surely, 2^8312121 is an apocalyptic number.

It is an amenable number.

8312121 is a deficient number, since it is larger than the sum of its proper divisors (3719899).

8312121 is a wasteful number, since it uses less digits than its factorization.

8312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976 (or 1973 counting only the distinct ones).

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

The square root of 8312121 is about 2883.0749209828. The cubic root of 8312121 is about 202.5678967566.

Adding to 8312121 its reverse (1212138), we get a palindrome (9524259).

The spelling of 8312121 in words is "eight million, three hundred twelve thousand, one hundred twenty-one".