8515323213 has 4 divisors (see below), whose sum is σ = 11353764288. Its totient is φ = 5676882140.

The previous prime is 8515323151. The next prime is 8515323253. The reversal of 8515323213 is 3123235158.

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 a cyclic number.

It is not a de Polignac number, because 8515323213 - 2¹⁸ = 8515061069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8515323253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1419220533 + ... + 1419220538.

It is an arithmetic number, because the mean of its divisors is an integer number (2838441072).

Almost surely, 2^8515323213 is an apocalyptic number.

It is an amenable number.

8515323213 is a deficient number, since it is larger than the sum of its proper divisors (2838441075).

8515323213 is a wasteful number, since it uses less digits than its factorization.

8515323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838441074.

The product of its digits is 21600, while the sum is 33.

The square root of 8515323213 is about 92278.5089443907. The cubic root of 8515323213 is about 2042.0531690908.

The spelling of 8515323213 in words is "eight billion, five hundred fifteen million, three hundred twenty-three thousand, two hundred thirteen".