30929081 has 2 divisors, whose sum is σ = 30929082. Its totient is φ = 30929080.

The previous prime is 30929071. The next prime is 30929111. The reversal of 30929081 is 18092903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17305600 + 13623481 = 4160^2 + 3691^2 .

It is an emirp because it is prime and its reverse (18092903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30929081 - 2¹⁴ = 30912697 is a prime.

It is a super-2 number, since 2×30929081² = 1913216103009122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30929011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15464540 + 15464541.

It is an arithmetic number, because the mean of its divisors is an integer number (15464541).

Almost surely, 2^30929081 is an apocalyptic number.

It is an amenable number.

30929081 is a deficient number, since it is larger than the sum of its proper divisors (1).

30929081 is an equidigital number, since it uses as much as digits as its factorization.

30929081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 30929081 is about 5561.3920020081. The cubic root of 30929081 is about 313.8983301007.

The spelling of 30929081 in words is "thirty million, nine hundred twenty-nine thousand, eighty-one".