211103211031 has 16 divisors (see below), whose sum is σ = 230910870528. Its totient is φ = 192126614400.

The previous prime is 211103211029. The next prime is 211103211037. The reversal of 211103211031 is 130112301112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211103211031 - 2¹ = 211103211029 is a prime.

It is a super-2 number, since 2×211103211031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211103210996 and 211103211014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211103211037) 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, 525216 + ... + 835498.

It is an arithmetic number, because the mean of its divisors is an integer number (14431929408).

Almost surely, 2^211103211031 is an apocalyptic number.

211103211031 is a deficient number, since it is larger than the sum of its proper divisors (19807659497).

211103211031 is a wasteful number, since it uses less digits than its factorization.

211103211031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311622.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 211103211031 its reverse (130112301112), we get a palindrome (341215512143).

The spelling of 211103211031 in words is "two hundred eleven billion, one hundred three million, two hundred eleven thousand, thirty-one".