30053213 has 4 divisors (see below), whose sum is σ = 30865500. Its totient is φ = 29240928.

The previous prime is 30053209. The next prime is 30053267. The reversal of 30053213 is 31235003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31235003 = 367 ⋅85109.

It can be written as a sum of positive squares in 2 ways, for example, as 11580409 + 18472804 = 3403^2 + 4298^2 .

It is a cyclic number.

It is not a de Polignac number, because 30053213 - 2² = 30053209 is a prime.

It is a super-2 number, since 2×30053213² = 1806391223246738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30053191 and 30053200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30053293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406088 + ... + 406161.

It is an arithmetic number, because the mean of its divisors is an integer number (7716375).

Almost surely, 2^30053213 is an apocalyptic number.

It is an amenable number.

30053213 is a deficient number, since it is larger than the sum of its proper divisors (812287).

30053213 is an equidigital number, since it uses as much as digits as its factorization.

30053213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812286.

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

The square root of 30053213 is about 5482.0810829465. The cubic root of 30053213 is about 310.9068589268.

Adding to 30053213 its reverse (31235003), we get a palindrome (61288216).

The spelling of 30053213 in words is "thirty million, fifty-three thousand, two hundred thirteen".