211123031204 has 12 divisors (see below), whose sum is σ = 369493300428. Its totient is φ = 105553516800.

The previous prime is 211123031159. The next prime is 211123031219. The reversal of 211123031204 is 402130321112.

211123031204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 196674510400 + 14448520804 = 443480^2 + 120202^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 1940117 + ... + 2046044.

It is an arithmetic number, because the mean of its divisors is an integer number (30791108369).

Almost surely, 2^211123031204 is an apocalyptic number.

It is an amenable number.

211123031204 is a deficient number, since it is larger than the sum of its proper divisors (158370269224).

211123031204 is a wasteful number, since it uses less digits than its factorization.

211123031204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999406 (or 3999404 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211123031204 its reverse (402130321112), we get a palindrome (613253352316).

The spelling of 211123031204 in words is "two hundred eleven billion, one hundred twenty-three million, thirty-one thousand, two hundred four".