30886081 has 4 divisors (see below), whose sum is σ = 31309252. Its totient is φ = 30462912.

The previous prime is 30886067. The next prime is 30886091. The reversal of 30886081 is 18068803.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15085456 + 15800625 = 3884^2 + 3975^2 .

It is a cyclic number.

It is not a de Polignac number, because 30886081 - 2⁵ = 30886049 is a prime.

It is a super-2 number, since 2×30886081² = 1907899999077122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30886091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211476 + ... + 211621.

It is an arithmetic number, because the mean of its divisors is an integer number (7827313).

Almost surely, 2^30886081 is an apocalyptic number.

It is an amenable number.

30886081 is a deficient number, since it is larger than the sum of its proper divisors (423171).

30886081 is an equidigital number, since it uses as much as digits as its factorization.

30886081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423170.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 30886081 is about 5557.5247187934. The cubic root of 30886081 is about 313.7527940578.

The spelling of 30886081 in words is "thirty million, eight hundred eighty-six thousand, eighty-one".