30123123110203 has 4 divisors (see below), whose sum is σ = 30125432647368. Its totient is φ = 30120813573040.

The previous prime is 30123123110167. The next prime is 30123123110263. The reversal of 30123123110203 is 30201132132103.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30123123110203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30123123110263) 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, 1154749018 + ... + 1154775103.

It is an arithmetic number, because the mean of its divisors is an integer number (7531358161842).

Almost surely, 2^{30123123110203} is an apocalyptic number.

30123123110203 is a deficient number, since it is larger than the sum of its proper divisors (2309537165).

30123123110203 is a wasteful number, since it uses less digits than its factorization.

30123123110203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309537164.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 30123123110203 its reverse (30201132132103), we get a palindrome (60324255242306).

The spelling of 30123123110203 in words is "thirty trillion, one hundred twenty-three billion, one hundred twenty-three million, one hundred ten thousand, two hundred three".