30808582381 has 2 divisors, whose sum is σ = 30808582382. Its totient is φ = 30808582380.

The previous prime is 30808582373. The next prime is 30808582411. The reversal of 30808582381 is 18328580803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30567277225 + 241305156 = 174835^2 + 15534^2 .

It is a cyclic number.

It is not a de Polignac number, because 30808582381 - 2³ = 30808582373 is a prime.

It is a super-2 number, since 2×30808582381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30808502381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15404291190 + 15404291191.

It is an arithmetic number, because the mean of its divisors is an integer number (15404291191).

Almost surely, 2^30808582381 is an apocalyptic number.

It is an amenable number.

30808582381 is a deficient number, since it is larger than the sum of its proper divisors (1).

30808582381 is an equidigital number, since it uses as much as digits as its factorization.

30808582381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 30808582381 in words is "thirty billion, eight hundred eight million, five hundred eighty-two thousand, three hundred eighty-one".