30120311123 has 6 divisors (see below), whose sum is σ = 35037912996. Its totient is φ = 25817409492.

The previous prime is 30120311113. The next prime is 30120311129. The reversal of 30120311123 is 32111302103.

It is not a de Polignac number, because 30120311123 - 2⁸ = 30120310867 is a prime.

It is a super-2 number, since 2×30120311123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30120311129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307350065 + ... + 307350162.

It is an arithmetic number, because the mean of its divisors is an integer number (5839652166).

Almost surely, 2^30120311123 is an apocalyptic number.

30120311123 is a deficient number, since it is larger than the sum of its proper divisors (4917601873).

30120311123 is an equidigital number, since it uses as much as digits as its factorization.

30120311123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614700241 (or 614700234 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30120311123 its reverse (32111302103), we get a palindrome (62231613226).

The spelling of 30120311123 in words is "thirty billion, one hundred twenty million, three hundred eleven thousand, one hundred twenty-three".