30013112123 has 4 divisors (see below), whose sum is σ = 30013893360. Its totient is φ = 30012330888.

The previous prime is 30013112027. The next prime is 30013112149. The reversal of 30013112123 is 32121131003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30013112123 - 2⁸ = 30013111867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30013112153) 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, 329840 + ... + 410877.

It is an arithmetic number, because the mean of its divisors is an integer number (7503473340).

Almost surely, 2^30013112123 is an apocalyptic number.

30013112123 is a deficient number, since it is larger than the sum of its proper divisors (781237).

30013112123 is an equidigital number, since it uses as much as digits as its factorization.

30013112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781236.

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

Adding to 30013112123 its reverse (32121131003), we get a palindrome (62134243126).

The spelling of 30013112123 in words is "thirty billion, thirteen million, one hundred twelve thousand, one hundred twenty-three".