30421013 has 16 divisors (see below), whose sum is σ = 36633600. Its totient is φ = 25225200.

The previous prime is 30421009. The next prime is 30421021. The reversal of 30421013 is 31012403.

It is not a de Polignac number, because 30421013 - 2² = 30421009 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 (30421003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9203 + ... + 12063.

It is an arithmetic number, because the mean of its divisors is an integer number (2289600).

Almost surely, 2^30421013 is an apocalyptic number.

It is an amenable number.

30421013 is a deficient number, since it is larger than the sum of its proper divisors (6212587).

30421013 is an equidigital number, since it uses as much as digits as its factorization.

30421013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913 (or 2899 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30421013 is about 5515.5247257174. The cubic root of 30421013 is about 312.1700427729.

Adding to 30421013 its reverse (31012403), we get a palindrome (61433416).

The spelling of 30421013 in words is "thirty million, four hundred twenty-one thousand, thirteen".