211030311103 has 4 divisors (see below), whose sum is σ = 212548514920. Its totient is φ = 209512107288.

The previous prime is 211030311031. The next prime is 211030311169. The reversal of 211030311103 is 301113030112.

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 211030311103 - 2²⁵ = 210996756671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211030311203) 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, 759101700 + ... + 759101977.

It is an arithmetic number, because the mean of its divisors is an integer number (53137128730).

Almost surely, 2^211030311103 is an apocalyptic number.

211030311103 is a deficient number, since it is larger than the sum of its proper divisors (1518203817).

211030311103 is a wasteful number, since it uses less digits than its factorization.

211030311103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518203816.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 211030311103 its reverse (301113030112), we get a palindrome (512143341215).

The spelling of 211030311103 in words is "two hundred eleven billion, thirty million, three hundred eleven thousand, one hundred three".