30314721 has 4 divisors (see below), whose sum is σ = 40419632. Its totient is φ = 20209812.

The previous prime is 30314717. The next prime is 30314771. The reversal of 30314721 is 12741303.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12741303 = 3 ⋅4247101.

It is not a de Polignac number, because 30314721 - 2² = 30314717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30314701) 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, 5052451 + ... + 5052456.

It is an arithmetic number, because the mean of its divisors is an integer number (10104908).

Almost surely, 2^30314721 is an apocalyptic number.

It is an amenable number.

30314721 is a deficient number, since it is larger than the sum of its proper divisors (10104911).

30314721 is a wasteful number, since it uses less digits than its factorization.

30314721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10104910.

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

The square root of 30314721 is about 5505.8805835216. The cubic root of 30314721 is about 311.8060411014.

The spelling of 30314721 in words is "thirty million, three hundred fourteen thousand, seven hundred twenty-one".