211031123102 has 4 divisors (see below), whose sum is σ = 316546684656. Its totient is φ = 105515561550.

The previous prime is 211031123089. The next prime is 211031123189. The reversal of 211031123102 is 201321130112.

211031123102 is digitally balanced in base 2 and base 3, because in such bases 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 congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 52757780774 + ... + 52757780777.

It is an arithmetic number, because the mean of its divisors is an integer number (79136671164).

Almost surely, 2^211031123102 is an apocalyptic number.

211031123102 is a deficient number, since it is larger than the sum of its proper divisors (105515561554).

211031123102 is a wasteful number, since it uses less digits than its factorization.

211031123102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105515561553.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 211031123102 its reverse (201321130112), we get a palindrome (412352253214).

The spelling of 211031123102 in words is "two hundred eleven billion, thirty-one million, one hundred twenty-three thousand, one hundred two".