30083681 has 2 divisors, whose sum is σ = 30083682. Its totient is φ = 30083680.

The previous prime is 30083663. The next prime is 30083717. The reversal of 30083681 is 18638003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29376400 + 707281 = 5420^2 + 841^2 .

It is an emirp because it is prime and its reverse (18638003) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30083681 is a prime.

It is a super-2 number, since 2×30083681² = 1810055725019522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30083611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15041840 + 15041841.

It is an arithmetic number, because the mean of its divisors is an integer number (15041841).

Almost surely, 2^30083681 is an apocalyptic number.

It is an amenable number.

30083681 is a deficient number, since it is larger than the sum of its proper divisors (1).

30083681 is an equidigital number, since it uses as much as digits as its factorization.

30083681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 30083681 is about 5484.8592507010. The cubic root of 30083681 is about 311.0118894143.

The spelling of 30083681 in words is "thirty million, eighty-three thousand, six hundred eighty-one".