30001023123 has 16 divisors (see below), whose sum is σ = 42263251200. Its totient is φ = 18877566240.

The previous prime is 30001023097. The next prime is 30001023149. The reversal of 30001023123 is 32132010003.

It is an interprime number because it is at equal distance from previous prime (30001023097) and next prime (30001023149).

It is not a de Polignac number, because 30001023123 - 2²² = 29996828819 is a prime.

It is a super-2 number, since 2×30001023123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30001023023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 962983 + ... + 993648.

It is an arithmetic number, because the mean of its divisors is an integer number (2641453200).

Almost surely, 2^30001023123 is an apocalyptic number.

30001023123 is a deficient number, since it is larger than the sum of its proper divisors (12262228077).

30001023123 is a wasteful number, since it uses less digits than its factorization.

30001023123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956922.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 30001023123 its reverse (32132010003), we get a palindrome (62133033126).

The spelling of 30001023123 in words is "thirty billion, one million, twenty-three thousand, one hundred twenty-three".