30220723 has 8 divisors (see below), whose sum is σ = 32604768. Its totient is φ = 27845184.

The previous prime is 30220717. The next prime is 30220727. The reversal of 30220723 is 32702203.

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 a de Polignac number, because none of the positive numbers 2^k-30220723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30220723.

It is not an unprimeable number, because it can be changed into a prime (30220727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6615 + ... + 10207.

It is an arithmetic number, because the mean of its divisors is an integer number (4075596).

Almost surely, 2^30220723 is an apocalyptic number.

30220723 is a deficient number, since it is larger than the sum of its proper divisors (2384045).

30220723 is a wasteful number, since it uses less digits than its factorization.

30220723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4253.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 30220723 is about 5497.3378102496. The cubic root of 30220723 is about 311.4834311735.

Adding to 30220723 its reverse (32702203), we get a palindrome (62922926).

It can be divided in two parts, 302 and 20723, that added together give a square (21025 = 145²).

The spelling of 30220723 in words is "thirty million, two hundred twenty thousand, seven hundred twenty-three".