30081019 has 2 divisors, whose sum is σ = 30081020. Its totient is φ = 30081018.

The previous prime is 30081011. The next prime is 30081031. The reversal of 30081019 is 91018003.

It is a weak prime.

It is an emirp because it is prime and its reverse (91018003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30081019 - 2³ = 30081011 is a prime.

It is a super-2 number, since 2×30081019² = 1809735408156722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30081011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15040509 + 15040510.

It is an arithmetic number, because the mean of its divisors is an integer number (15040510).

Almost surely, 2^30081019 is an apocalyptic number.

30081019 is a deficient number, since it is larger than the sum of its proper divisors (1).

30081019 is an equidigital number, since it uses as much as digits as its factorization.

30081019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 30081019 is about 5484.6165773006. The cubic root of 30081019 is about 311.0027156912.

The spelling of 30081019 in words is "thirty million, eighty-one thousand, nineteen".