30623213 has 2 divisors, whose sum is σ = 30623214. Its totient is φ = 30623212.

The previous prime is 30623207. The next prime is 30623227. The reversal of 30623213 is 31232603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25180324 + 5442889 = 5018^2 + 2333^2 .

It is a cyclic number.

It is not a de Polignac number, because 30623213 - 2⁶ = 30623149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30623233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15311606 + 15311607.

It is an arithmetic number, because the mean of its divisors is an integer number (15311607).

Almost surely, 2^30623213 is an apocalyptic number.

It is an amenable number.

30623213 is a deficient number, since it is larger than the sum of its proper divisors (1).

30623213 is an equidigital number, since it uses as much as digits as its factorization.

30623213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 30623213 is about 5533.8244460771. The cubic root of 30623213 is about 312.8601518107.

Adding to 30623213 its reverse (31232603), we get a palindrome (61855816).

The spelling of 30623213 in words is "thirty million, six hundred twenty-three thousand, two hundred thirteen".