30481161 has 4 divisors (see below), whose sum is σ = 40641552. Its totient is φ = 20320772.

The previous prime is 30481159. The next prime is 30481177. The reversal of 30481161 is 16118403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30481161 - 2¹ = 30481159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30481261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5080191 + ... + 5080196.

It is an arithmetic number, because the mean of its divisors is an integer number (10160388).

Almost surely, 2^30481161 is an apocalyptic number.

It is an amenable number.

30481161 is a deficient number, since it is larger than the sum of its proper divisors (10160391).

30481161 is a wasteful number, since it uses less digits than its factorization.

30481161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10160390.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 30481161 is about 5520.9746422167. The cubic root of 30481161 is about 312.3756467359.

Adding to 30481161 its reverse (16118403), we get a palindrome (46599564).

The spelling of 30481161 in words is "thirty million, four hundred eighty-one thousand, one hundred sixty-one".