30042013 has 2 divisors, whose sum is σ = 30042014. Its totient is φ = 30042012.

The previous prime is 30042011. The next prime is 30042031. The reversal of 30042013 is 31024003.

Together with next prime (30042031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24078649 + 5963364 = 4907^2 + 2442^2 .

It is a cyclic number.

It is not a de Polignac number, because 30042013 - 2¹ = 30042011 is a prime.

Together with 30042011, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 30041984 and 30042002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30042011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15021006 + 15021007.

It is an arithmetic number, because the mean of its divisors is an integer number (15021007).

Almost surely, 2^30042013 is an apocalyptic number.

It is an amenable number.

30042013 is a deficient number, since it is larger than the sum of its proper divisors (1).

30042013 is an equidigital number, since it uses as much as digits as its factorization.

30042013 is an odious number, because the sum of its binary digits is odd.

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

The square root of 30042013 is about 5481.0594778747. The cubic root of 30042013 is about 310.8682320034.

Adding to 30042013 its reverse (31024003), we get a palindrome (61066016).

The spelling of 30042013 in words is "thirty million, forty-two thousand, thirteen".