30850681 has 4 divisors (see below), whose sum is σ = 30873700. Its totient is φ = 30827664.

The previous prime is 30850667. The next prime is 30850691. The reversal of 30850681 is 18605803.

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 7376656 + 23474025 = 2716^2 + 4845^2 .

It is a cyclic number.

It is not a de Polignac number, because 30850681 - 2⁵ = 30850649 is a prime.

It is a super-2 number, since 2×30850681² = 1903529036327522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30850601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9366 + ... + 12223.

It is an arithmetic number, because the mean of its divisors is an integer number (7718425).

Almost surely, 2^30850681 is an apocalyptic number.

It is an amenable number.

30850681 is a deficient number, since it is larger than the sum of its proper divisors (23019).

30850681 is a wasteful number, since it uses less digits than its factorization.

30850681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23018.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 30850681 is about 5554.3389345628. The cubic root of 30850681 is about 313.6328792545.

The spelling of 30850681 in words is "thirty million, eight hundred fifty thousand, six hundred eighty-one".