30223709 has 4 divisors (see below), whose sum is σ = 31040604. Its totient is φ = 29406816.

The previous prime is 30223693. The next prime is 30223723. The reversal of 30223709 is 90732203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90732203 = 739 ⋅122777.

It can be written as a sum of positive squares in 2 ways, for example, as 14462809 + 15760900 = 3803^2 + 3970^2 .

It is a cyclic number.

It is not a de Polignac number, because 30223709 - 2⁴ = 30223693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30223759) 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, 408392 + ... + 408465.

It is an arithmetic number, because the mean of its divisors is an integer number (7760151).

Almost surely, 2^30223709 is an apocalyptic number.

It is an amenable number.

30223709 is a deficient number, since it is larger than the sum of its proper divisors (816895).

30223709 is an equidigital number, since it uses as much as digits as its factorization.

30223709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816894.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 30223709 is about 5497.6093895438. The cubic root of 30223709 is about 311.4936896849.

The spelling of 30223709 in words is "thirty million, two hundred twenty-three thousand, seven hundred nine".