30447109081 has 3 divisors (see below), whose sum is σ = 30447283573. Its totient is φ = 30446934590.

The previous prime is 30447109031. The next prime is 30447109087. The reversal of 30447109081 is 18090174403.

The square root of 30447109081 is 174491.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-30447109081 is a prime.

It is a super-2 number, since 2×30447109081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30447109081.

It is not an unprimeable number, because it can be changed into a prime (30447109087) 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 2 ways as a sum of consecutive naturals, for example, 87246 + ... + 261736.

Almost surely, 2^30447109081 is an apocalyptic number.

30447109081 is the 174491-st square number.

30447109081 is the 87246-th centered octagonal number.

It is an amenable number.

30447109081 is a deficient number, since it is larger than the sum of its proper divisors (174492).

30447109081 is an frugal number, since it uses more digits than its factorization.

30447109081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348982 (or 174491 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 30447109081 in words is "thirty billion, four hundred forty-seven million, one hundred nine thousand, eighty-one".