30421213 has 8 divisors (see below), whose sum is σ = 30846816. Its totient is φ = 29998800.

The previous prime is 30421207. The next prime is 30421247. The reversal of 30421213 is 31212403.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30421213 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 (30421513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23070 + ... + 24352.

It is an arithmetic number, because the mean of its divisors is an integer number (3855852).

Almost surely, 2^30421213 is an apocalyptic number.

It is an amenable number.

30421213 is a deficient number, since it is larger than the sum of its proper divisors (425603).

30421213 is a wasteful number, since it uses less digits than its factorization.

30421213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 30421213 is about 5515.5428563288. The cubic root of 30421213 is about 312.1707268820.

Adding to 30421213 its reverse (31212403), we get a palindrome (61633616).

The spelling of 30421213 in words is "thirty million, four hundred twenty-one thousand, two hundred thirteen".