30530213 has 16 divisors (see below), whose sum is σ = 36163584. Its totient is φ = 25231920.

The previous prime is 30530209. The next prime is 30530219. The reversal of 30530213 is 31203503.

It is not a de Polignac number, because 30530213 - 2² = 30530209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30530191 and 30530200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30530219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22706 + ... + 24012.

It is an arithmetic number, because the mean of its divisors is an integer number (2260224).

Almost surely, 2^30530213 is an apocalyptic number.

It is an amenable number.

30530213 is a deficient number, since it is larger than the sum of its proper divisors (5633371).

30530213 is a wasteful number, since it uses less digits than its factorization.

30530213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 30530213 is about 5525.4151880198. The cubic root of 30530213 is about 312.5431210896.

Adding to 30530213 its reverse (31203503), we get a palindrome (61733716).

The spelling of 30530213 in words is "thirty million, five hundred thirty thousand, two hundred thirteen".