30384381 has 4 divisors (see below), whose sum is σ = 40512512. Its totient is φ = 20256252.

The previous prime is 30384353. The next prime is 30384383. The reversal of 30384381 is 18348303.

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 not a de Polignac number, because 30384381 - 2¹⁰ = 30383357 is a prime.

It is a super-2 number, since 2×30384381² = 1846421217506322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30384383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5064061 + ... + 5064066.

It is an arithmetic number, because the mean of its divisors is an integer number (10128128).

Almost surely, 2^30384381 is an apocalyptic number.

It is an amenable number.

30384381 is a deficient number, since it is larger than the sum of its proper divisors (10128131).

30384381 is a wasteful number, since it uses less digits than its factorization.

30384381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10128130.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 30384381 is about 5512.2029171648. The cubic root of 30384381 is about 312.0446907547.

The spelling of 30384381 in words is "thirty million, three hundred eighty-four thousand, three hundred eighty-one".