30001232123 has 4 divisors (see below), whose sum is σ = 31580244360. Its totient is φ = 28422219888.

The previous prime is 30001232117. The next prime is 30001232179. The reversal of 30001232123 is 32123210003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32123210003 = 133559 ⋅240517.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30001232123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30001232923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789506090 + ... + 789506127.

It is an arithmetic number, because the mean of its divisors is an integer number (7895061090).

Almost surely, 2^30001232123 is an apocalyptic number.

30001232123 is a deficient number, since it is larger than the sum of its proper divisors (1579012237).

30001232123 is a wasteful number, since it uses less digits than its factorization.

30001232123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579012236.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 30001232123 its reverse (32123210003), we get a palindrome (62124442126).

The spelling of 30001232123 in words is "thirty billion, one million, two hundred thirty-two thousand, one hundred twenty-three".