30881147 has 8 divisors (see below), whose sum is σ = 33728832. Its totient is φ = 28040200.

The previous prime is 30881141. The next prime is 30881167. The reversal of 30881147 is 74118803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30881147 - 2¹² = 30877051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30881141) 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 7 ways as a sum of consecutive naturals, for example, 16388 + ... + 18174.

It is an arithmetic number, because the mean of its divisors is an integer number (4216104).

Almost surely, 2^30881147 is an apocalyptic number.

30881147 is a deficient number, since it is larger than the sum of its proper divisors (2847685).

30881147 is a wasteful number, since it uses less digits than its factorization.

30881147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 30881147 is about 5557.0807984049. The cubic root of 30881147 is about 313.7360860059.

The spelling of 30881147 in words is "thirty million, eight hundred eighty-one thousand, one hundred forty-seven".