30081213 has 12 divisors (see below), whose sum is σ = 45060288. Its totient is φ = 20053980.

The previous prime is 30081197. The next prime is 30081221. The reversal of 30081213 is 31218003.

It is not a de Polignac number, because 30081213 - 2⁴ = 30081197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30081283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61653 + ... + 62138.

It is an arithmetic number, because the mean of its divisors is an integer number (3755024).

Almost surely, 2^30081213 is an apocalyptic number.

It is an amenable number.

30081213 is a deficient number, since it is larger than the sum of its proper divisors (14979075).

30081213 is an equidigital number, since it uses as much as digits as its factorization.

30081213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123806 (or 123794 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 30081213 is about 5484.6342631027. The cubic root of 30081213 is about 311.0033842679.

Adding to 30081213 its reverse (31218003), we get a palindrome (61299216).

The spelling of 30081213 in words is "thirty million, eighty-one thousand, two hundred thirteen".