30340281 has 8 divisors (see below), whose sum is σ = 40479264. Its totient is φ = 20214080.

The previous prime is 30340267. The next prime is 30340301. The reversal of 30340281 is 18204303.

It is a happy number.

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 30340281 - 2⁵ = 30340249 is a prime.

It is a super-2 number, since 2×30340281² = 1841065302317922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30340201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6946 + ... + 10436.

It is an arithmetic number, because the mean of its divisors is an integer number (5059908).

Almost surely, 2^30340281 is an apocalyptic number.

It is an amenable number.

30340281 is a deficient number, since it is larger than the sum of its proper divisors (10138983).

30340281 is a wasteful number, since it uses less digits than its factorization.

30340281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6391.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 30340281 is about 5508.2012490467. The cubic root of 30340281 is about 311.8936500615.

Adding to 30340281 its reverse (18204303), we get a palindrome (48544584).

The spelling of 30340281 in words is "thirty million, three hundred forty thousand, two hundred eighty-one".