211031310103 has 4 divisors (see below), whose sum is σ = 211397049520. Its totient is φ = 210665570688.

The previous prime is 211031310097. The next prime is 211031310107. The reversal of 211031310103 is 301013130112.

211031310103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 211031310103 - 2⁵ = 211031310071 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 (211031310107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182868843 + ... + 182869996.

It is an arithmetic number, because the mean of its divisors is an integer number (52849262380).

Almost surely, 2^211031310103 is an apocalyptic number.

211031310103 is a deficient number, since it is larger than the sum of its proper divisors (365739417).

211031310103 is an equidigital number, since it uses as much as digits as its factorization.

211031310103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365739416.

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

Adding to 211031310103 its reverse (301013130112), we get a palindrome (512044440215).

The spelling of 211031310103 in words is "two hundred eleven billion, thirty-one million, three hundred ten thousand, one hundred three".