30220213 has 4 divisors (see below), whose sum is σ = 30732480. Its totient is φ = 29707948.

The previous prime is 30220207. The next prime is 30220219. The reversal of 30220213 is 31202203.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (30220207) and next prime (30220219).

It is a cyclic number.

It is not a de Polignac number, because 30220213 - 2⁹ = 30219701 is a prime.

It is a super-2 number, since 2×30220213² = 1826522547530738, 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 = 30220193 and 30220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30220219) 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, 256045 + ... + 256162.

It is an arithmetic number, because the mean of its divisors is an integer number (7683120).

Almost surely, 2^30220213 is an apocalyptic number.

It is an amenable number.

30220213 is a deficient number, since it is larger than the sum of its proper divisors (512267).

30220213 is an equidigital number, since it uses as much as digits as its factorization.

30220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512266.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30220213 is about 5497.2914239651. The cubic root of 30220213 is about 311.4816789824.

Adding to 30220213 its reverse (31202203), we get a palindrome (61422416).

The spelling of 30220213 in words is "thirty million, two hundred twenty thousand, two hundred thirteen".