30860213 has 2 divisors, whose sum is σ = 30860214. Its totient is φ = 30860212.

The previous prime is 30860177. The next prime is 30860231. The reversal of 30860213 is 31206803.

Together with next prime (30860231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30217009 + 643204 = 5497^2 + 802^2 .

It is an emirp because it is prime and its reverse (31206803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30860213 - 2⁶ = 30860149 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30860233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15430106 + 15430107.

It is an arithmetic number, because the mean of its divisors is an integer number (15430107).

Almost surely, 2^30860213 is an apocalyptic number.

It is an amenable number.

30860213 is a deficient number, since it is larger than the sum of its proper divisors (1).

30860213 is an equidigital number, since it uses as much as digits as its factorization.

30860213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 30860213 is about 5555.1969362031. The cubic root of 30860213 is about 313.6651771992.

The spelling of 30860213 in words is "thirty million, eight hundred sixty thousand, two hundred thirteen".