211030113123 has 6 divisors (see below), whose sum is σ = 304821274524. Its totient is φ = 140686742076.

The previous prime is 211030113109. The next prime is 211030113131. The reversal of 211030113123 is 321311030112.

211030113123 is a `hidden beast` number, since 211 + 0 + 301 + 131 + 23 = 666.

It is not a de Polignac number, because 211030113123 - 2²⁵ = 210996558691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211030113096 and 211030113105.

It is not an unprimeable number, because it can be changed into a prime (211030113103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11723895165 + ... + 11723895182.

It is an arithmetic number, because the mean of its divisors is an integer number (50803545754).

Almost surely, 2^211030113123 is an apocalyptic number.

211030113123 is a deficient number, since it is larger than the sum of its proper divisors (93791161401).

211030113123 is a wasteful number, since it uses less digits than its factorization.

211030113123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23447790353 (or 23447790350 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 211030113123 its reverse (321311030112), we get a palindrome (532341143235).

The spelling of 211030113123 in words is "two hundred eleven billion, thirty million, one hundred thirteen thousand, one hundred twenty-three".