30850013 has 2 divisors, whose sum is σ = 30850014. Its totient is φ = 30850012.

The previous prime is 30850009. The next prime is 30850031. The reversal of 30850013 is 31005803.

Together with next prime (30850031) 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., 20268004 + 10582009 = 4502^2 + 3253^2 .

It is a cyclic number.

It is not a de Polignac number, because 30850013 - 2² = 30850009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30850033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15425006 + 15425007.

It is an arithmetic number, because the mean of its divisors is an integer number (15425007).

Almost surely, 2^30850013 is an apocalyptic number.

It is an amenable number.

30850013 is a deficient number, since it is larger than the sum of its proper divisors (1).

30850013 is an equidigital number, since it uses as much as digits as its factorization.

30850013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 30850013 is about 5554.2788010686. The cubic root of 30850013 is about 313.6306155738.

Adding to 30850013 its reverse (31005803), we get a palindrome (61855816).

The spelling of 30850013 in words is "thirty million, eight hundred fifty thousand, thirteen".