30838081 has 2 divisors, whose sum is σ = 30838082. Its totient is φ = 30838080.

The previous prime is 30838079. The next prime is 30838091. The reversal of 30838081 is 18083803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29376400 + 1461681 = 5420^2 + 1209^2 .

It is an emirp because it is prime and its reverse (18083803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30838081 - 2¹ = 30838079 is a prime.

It is a super-2 number, since 2×30838081² = 1901974479525122, which contains 22 as substring.

Together with 30838079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30838091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15419040 + 15419041.

It is an arithmetic number, because the mean of its divisors is an integer number (15419041).

Almost surely, 2^30838081 is an apocalyptic number.

It is an amenable number.

30838081 is a deficient number, since it is larger than the sum of its proper divisors (1).

30838081 is an equidigital number, since it uses as much as digits as its factorization.

30838081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 30838081 is about 5553.2045703359. The cubic root of 30838081 is about 313.5901755792.

The spelling of 30838081 in words is "thirty million, eight hundred thirty-eight thousand, eighty-one".