30341721 has 4 divisors (see below), whose sum is σ = 40455632. Its totient is φ = 20227812.

The previous prime is 30341699. The next prime is 30341737. The reversal of 30341721 is 12714303.

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 30341721 - 2⁶ = 30341657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30341741) 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, 5056951 + ... + 5056956.

It is an arithmetic number, because the mean of its divisors is an integer number (10113908).

Almost surely, 2^30341721 is an apocalyptic number.

It is an amenable number.

30341721 is a deficient number, since it is larger than the sum of its proper divisors (10113911).

30341721 is a wasteful number, since it uses less digits than its factorization.

30341721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10113910.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 30341721 is about 5508.3319616741. The cubic root of 30341721 is about 311.8985843132.

It can be divided in two parts, 303 and 41721, that added together give a palindrome (42024).

The spelling of 30341721 in words is "thirty million, three hundred forty-one thousand, seven hundred twenty-one".