30203213 has 2 divisors, whose sum is σ = 30203214. Its totient is φ = 30203212.

The previous prime is 30203197. The next prime is 30203219. The reversal of 30203213 is 31230203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29789764 + 413449 = 5458^2 + 643^2 .

It is a cyclic number.

It is not a de Polignac number, because 30203213 - 2⁴ = 30203197 is a prime.

It is a Sophie Germain 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 (30203219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15101606 + 15101607.

It is an arithmetic number, because the mean of its divisors is an integer number (15101607).

Almost surely, 2^30203213 is an apocalyptic number.

It is an amenable number.

30203213 is a deficient number, since it is larger than the sum of its proper divisors (1).

30203213 is an equidigital number, since it uses as much as digits as its factorization.

30203213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 30203213 is about 5495.7449904449. The cubic root of 30203213 is about 311.4232613293.

Adding to 30203213 its reverse (31230203), we get a palindrome (61433416).

The spelling of 30203213 in words is "thirty million, two hundred three thousand, two hundred thirteen".