8113213 has 2 divisors, whose sum is σ = 8113214. Its totient is φ = 8113212.

The previous prime is 8113211. The next prime is 8113271. The reversal of 8113213 is 3123118.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6365529 + 1747684 = 2523^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 8113213 - 2¹ = 8113211 is a prime.

Together with 8113211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8113211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4056606 + 4056607.

It is an arithmetic number, because the mean of its divisors is an integer number (4056607).

Almost surely, 2^8113213 is an apocalyptic number.

It is an amenable number.

8113213 is a deficient number, since it is larger than the sum of its proper divisors (1).

8113213 is an equidigital number, since it uses as much as digits as its factorization.

8113213 is an odious number, because the sum of its binary digits is odd.

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

The square root of 8113213 is about 2848.3702357664. The cubic root of 8113213 is about 200.9390259183.

The spelling of 8113213 in words is "eight million, one hundred thirteen thousand, two hundred thirteen".