8313121 has 4 divisors (see below), whose sum is σ = 8330544. Its totient is φ = 8295700.

The previous prime is 8313113. The next prime is 8313133. The reversal of 8313121 is 1213138.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1213138 = 2 ⋅606569.

It is a cyclic number.

It is not a de Polignac number, because 8313121 - 2³ = 8313113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8313101) 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 3 ways as a sum of consecutive naturals, for example, 7975 + ... + 8956.

It is an arithmetic number, because the mean of its divisors is an integer number (2082636).

Almost surely, 2^8313121 is an apocalyptic number.

It is an amenable number.

8313121 is a deficient number, since it is larger than the sum of its proper divisors (17423).

8313121 is a wasteful number, since it uses less digits than its factorization.

8313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17422.

The product of its digits is 144, while the sum is 19.

The square root of 8313121 is about 2883.2483417146. The cubic root of 8313121 is about 202.5760198247.

Adding to 8313121 its reverse (1213138), we get a palindrome (9526259).

The spelling of 8313121 in words is "eight million, three hundred thirteen thousand, one hundred twenty-one".