30341021 has 4 divisors (see below), whose sum is σ = 30437052. Its totient is φ = 30244992.

The previous prime is 30341011. The next prime is 30341053. The reversal of 30341021 is 12014303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7778521 + 22562500 = 2789^2 + 4750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30341021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30340987 and 30341005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30341011) 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, 47540 + ... + 48173.

It is an arithmetic number, because the mean of its divisors is an integer number (7609263).

Almost surely, 2^30341021 is an apocalyptic number.

It is an amenable number.

30341021 is a deficient number, since it is larger than the sum of its proper divisors (96031).

30341021 is an equidigital number, since it uses as much as digits as its factorization.

30341021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96030.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30341021 is about 5508.2684212010. The cubic root of 30341021 is about 311.8961857381.

Adding to 30341021 its reverse (12014303), we get a palindrome (42355324).

The spelling of 30341021 in words is "thirty million, three hundred forty-one thousand, twenty-one".