30415213 has 2 divisors, whose sum is σ = 30415214. Its totient is φ = 30415212.

The previous prime is 30415211. The next prime is 30415283. The reversal of 30415213 is 31251403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23794884 + 6620329 = 4878^2 + 2573^2 .

It is an emirp because it is prime and its reverse (31251403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30415213 - 2¹ = 30415211 is a prime.

Together with 30415211, 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 (30415211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15207606 + 15207607.

It is an arithmetic number, because the mean of its divisors is an integer number (15207607).

Almost surely, 2^30415213 is an apocalyptic number.

It is an amenable number.

30415213 is a deficient number, since it is larger than the sum of its proper divisors (1).

30415213 is an equidigital number, since it uses as much as digits as its factorization.

30415213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 30415213 is about 5514.9989120579. The cubic root of 30415213 is about 312.1502023058.

Adding to 30415213 its reverse (31251403), we get a palindrome (61666616).

It can be divided in two parts, 30415 and 213, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 30415213 in words is "thirty million, four hundred fifteen thousand, two hundred thirteen".