8115213 has 4 divisors (see below), whose sum is σ = 10820288. Its totient is φ = 5410140.

The previous prime is 8115209. The next prime is 8115227. The reversal of 8115213 is 3125118.

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.

It is not a de Polignac number, because 8115213 - 2² = 8115209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8115213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8115203) 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, 1352533 + ... + 1352538.

It is an arithmetic number, because the mean of its divisors is an integer number (2705072).

Almost surely, 2^8115213 is an apocalyptic number.

It is an amenable number.

8115213 is a deficient number, since it is larger than the sum of its proper divisors (2705075).

8115213 is a wasteful number, since it uses less digits than its factorization.

8115213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705074.

The product of its digits is 240, while the sum is 21.

The square root of 8115213 is about 2848.7212920888. The cubic root of 8115213 is about 200.9555358194.

The spelling of 8115213 in words is "eight million, one hundred fifteen thousand, two hundred thirteen".