30204727381 has 2 divisors, whose sum is σ = 30204727382. Its totient is φ = 30204727380.

The previous prime is 30204727307. The next prime is 30204727387. The reversal of 30204727381 is 18372740203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25771165156 + 4433562225 = 160534^2 + 66585^2 .

It is an emirp because it is prime and its reverse (18372740203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30204727381 - 2³³ = 21614792789 is a prime.

It is a super-2 number, since 2×30204727381² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30204727381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30204727387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15102363690 + 15102363691.

It is an arithmetic number, because the mean of its divisors is an integer number (15102363691).

Almost surely, 2^30204727381 is an apocalyptic number.

It is an amenable number.

30204727381 is a deficient number, since it is larger than the sum of its proper divisors (1).

30204727381 is an equidigital number, since it uses as much as digits as its factorization.

30204727381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 30204727381 in words is "thirty billion, two hundred four million, seven hundred twenty-seven thousand, three hundred eighty-one".