30040013 has 2 divisors, whose sum is σ = 30040014. Its totient is φ = 30040012.

The previous prime is 30040009. The next prime is 30040057. The reversal of 30040013 is 31004003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15194404 + 14845609 = 3898^2 + 3853^2 .

It is an emirp because it is prime and its reverse (31004003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30040013 - 2² = 30040009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30039976 and 30040003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30040063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15020006 + 15020007.

It is an arithmetic number, because the mean of its divisors is an integer number (15020007).

Almost surely, 2^30040013 is an apocalyptic number.

It is an amenable number.

30040013 is a deficient number, since it is larger than the sum of its proper divisors (1).

30040013 is an equidigital number, since it uses as much as digits as its factorization.

30040013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30040013 is about 5480.8770283596. The cubic root of 30040013 is about 310.8613333283.

Adding to 30040013 its reverse (31004003), we get a palindrome (61044016).

The spelling of 30040013 in words is "thirty million, forty thousand, thirteen".