30031123123 has 4 divisors (see below), whose sum is σ = 30222404320. Its totient is φ = 29839841928.

The previous prime is 30031123091. The next prime is 30031123141. The reversal of 30031123123 is 32132113003.

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 30031123123 - 2⁵ = 30031123091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30031123123.

It is not an unprimeable number, because it can be changed into a prime (30031123183) 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, 95640363 + ... + 95640676.

It is an arithmetic number, because the mean of its divisors is an integer number (7555601080).

Almost surely, 2^30031123123 is an apocalyptic number.

30031123123 is a deficient number, since it is larger than the sum of its proper divisors (191281197).

30031123123 is a wasteful number, since it uses less digits than its factorization.

30031123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191281196.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30031123123 its reverse (32132113003), we get a palindrome (62163236126).

The spelling of 30031123123 in words is "thirty billion, thirty-one million, one hundred twenty-three thousand, one hundred twenty-three".