30301213 has 4 divisors (see below), whose sum is σ = 30872988. Its totient is φ = 29729440.

The previous prime is 30301199. The next prime is 30301241. The reversal of 30301213 is 31210303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23551609 + 6749604 = 4853^2 + 2598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30301213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30301193 and 30301202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30301253) 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, 285808 + ... + 285913.

It is an arithmetic number, because the mean of its divisors is an integer number (7718247).

Almost surely, 2^30301213 is an apocalyptic number.

It is an amenable number.

30301213 is a deficient number, since it is larger than the sum of its proper divisors (571775).

30301213 is an equidigital number, since it uses as much as digits as its factorization.

30301213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571774.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 30301213 is about 5504.6537584121. The cubic root of 30301213 is about 311.7597214519.

Adding to 30301213 its reverse (31210303), we get a palindrome (61511516).

The spelling of 30301213 in words is "thirty million, three hundred one thousand, two hundred thirteen".