30252213 has 6 divisors (see below), whose sum is σ = 43697654. Its totient is φ = 20168136.

The previous prime is 30252193. The next prime is 30252239. The reversal of 30252213 is 31225203.

Added to its reverse (31225203) it gives a triangular number (61477416 = T₁₁₀₈₈).

It can be written as a sum of positive squares in only one way, i.e., 19342404 + 10909809 = 4398^2 + 3303^2 .

It is not a de Polignac number, because 30252213 - 2⁹ = 30251701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30252413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1680670 + ... + 1680687.

Almost surely, 2^30252213 is an apocalyptic number.

It is an amenable number.

30252213 is a deficient number, since it is larger than the sum of its proper divisors (13445441).

30252213 is a wasteful number, since it uses less digits than its factorization.

30252213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361363 (or 3361360 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30252213 is about 5500.2011781389. The cubic root of 30252213 is about 311.5915822190.

Adding to 30252213 its reverse (31225203), we get a palindrome (61477416).

The spelling of 30252213 in words is "thirty million, two hundred fifty-two thousand, two hundred thirteen".