82814213 has 2 divisors, whose sum is σ = 82814214. Its totient is φ = 82814212.

The previous prime is 82814209. The next prime is 82814231. The reversal of 82814213 is 31241828.

Together with next prime (82814231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59320804 + 23493409 = 7702^2 + 4847^2 .

It is a cyclic number.

It is not a de Polignac number, because 82814213 - 2² = 82814209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82814273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41407106 + 41407107.

It is an arithmetic number, because the mean of its divisors is an integer number (41407107).

Almost surely, 2^82814213 is an apocalyptic number.

It is an amenable number.

82814213 is a deficient number, since it is larger than the sum of its proper divisors (1).

82814213 is an equidigital number, since it uses as much as digits as its factorization.

82814213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 29.

The square root of 82814213 is about 9100.2314805723. The cubic root of 82814213 is about 435.8813557179.

The spelling of 82814213 in words is "eighty-two million, eight hundred fourteen thousand, two hundred thirteen".