30120300623 has 16 divisors (see below), whose sum is σ = 35509369344. Its totient is φ = 25008924960.

The previous prime is 30120300607. The next prime is 30120300643. The reversal of 30120300623 is 32600302103.

It is a cyclic number.

It is not a de Polignac number, because 30120300623 - 2⁴ = 30120300607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30120300595 and 30120300604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120300643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197363 + ... + 314948.

It is an arithmetic number, because the mean of its divisors is an integer number (2219335584).

Almost surely, 2^30120300623 is an apocalyptic number.

30120300623 is a deficient number, since it is larger than the sum of its proper divisors (5389068721).

30120300623 is a wasteful number, since it uses less digits than its factorization.

30120300623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512582.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 30120300623 its reverse (32600302103), we get a palindrome (62720602726).

The spelling of 30120300623 in words is "thirty billion, one hundred twenty million, three hundred thousand, six hundred twenty-three".