30988841 has 8 divisors (see below), whose sum is σ = 35335944. Its totient is φ = 26922240.

The previous prime is 30988831. The next prime is 30988847. The reversal of 30988841 is 14888903.

It can be written as a sum of positive squares in 4 ways, for example, as 1449616 + 29539225 = 1204^2 + 5435^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30988841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30988847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69890 + ... + 70331.

It is an arithmetic number, because the mean of its divisors is an integer number (4416993).

Almost surely, 2^30988841 is an apocalyptic number.

It is an amenable number.

30988841 is a deficient number, since it is larger than the sum of its proper divisors (4347103).

30988841 is a wasteful number, since it uses less digits than its factorization.

30988841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140251.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 30988841 is about 5566.7621648495. The cubic root of 30988841 is about 314.1003675255.

The spelling of 30988841 in words is "thirty million, nine hundred eighty-eight thousand, eight hundred forty-one".