8231212079 has 4 divisors (see below), whose sum is σ = 8236726776. Its totient is φ = 8225697384.

The previous prime is 8231212069. The next prime is 8231212103. The reversal of 8231212079 is 9702121328.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8231212079 - 2²⁰ = 8230163503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8231212019) 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, 2755109 + ... + 2758094.

It is an arithmetic number, because the mean of its divisors is an integer number (2059181694).

Almost surely, 2^8231212079 is an apocalyptic number.

8231212079 is a deficient number, since it is larger than the sum of its proper divisors (5514697).

8231212079 is a wasteful number, since it uses less digits than its factorization.

8231212079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5514696.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 8231212079 is about 90726.0275720259. The cubic root of 8231212079 is about 2019.0849758124.

The spelling of 8231212079 in words is "eight billion, two hundred thirty-one million, two hundred twelve thousand, seventy-nine".