30030381 has 12 divisors (see below), whose sum is σ = 45929052. Its totient is φ = 18842496.

The previous prime is 30030379. The next prime is 30030389. The reversal of 30030381 is 18303003.

It can be written as a sum of positive squares in 2 ways, for example, as 24413481 + 5616900 = 4941^2 + 2370^2 .

It is not a de Polignac number, because 30030381 - 2¹ = 30030379 is a prime.

It is a super-2 number, since 2×30030381² = 1803647566010322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30030389) 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 11 ways as a sum of consecutive naturals, for example, 97986 + ... + 98291.

It is an arithmetic number, because the mean of its divisors is an integer number (3827421).

Almost surely, 2^30030381 is an apocalyptic number.

It is an amenable number.

30030381 is a deficient number, since it is larger than the sum of its proper divisors (15898671).

30030381 is a wasteful number, since it uses less digits than its factorization.

30030381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196300 (or 196297 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 30030381 is about 5479.9982664231. The cubic root of 30030381 is about 310.8281050199.

Adding to 30030381 its reverse (18303003), we get a palindrome (48333384).

The spelling of 30030381 in words is "thirty million, thirty thousand, three hundred eighty-one".