30316213 has 2 divisors, whose sum is σ = 30316214. Its totient is φ = 30316212.

The previous prime is 30316211. The next prime is 30316217. The reversal of 30316213 is 31261303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30228004 + 88209 = 5498^2 + 297^2 .

It is an emirp because it is prime and its reverse (31261303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30316213 - 2¹ = 30316211 is a prime.

It is a super-2 number, since 2×30316213² = 1838145541322738, which contains 22 as substring.

Together with 30316211, 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 (30316211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15158106 + 15158107.

It is an arithmetic number, because the mean of its divisors is an integer number (15158107).

Almost surely, 2^30316213 is an apocalyptic number.

It is an amenable number.

30316213 is a deficient number, since it is larger than the sum of its proper divisors (1).

30316213 is an equidigital number, since it uses as much as digits as its factorization.

30316213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 30316213 is about 5506.0160733510. The cubic root of 30316213 is about 311.8111564048.

Adding to 30316213 its reverse (31261303), we get a palindrome (61577516).

The spelling of 30316213 in words is "thirty million, three hundred sixteen thousand, two hundred thirteen".