211231223203 has 32 divisors (see below), whose sum is σ = 283717873152. Its totient is φ = 151877376000.

The previous prime is 211231223201. The next prime is 211231223233. The reversal of 211231223203 is 302322132112.

It is not a de Polignac number, because 211231223203 - 2¹ = 211231223201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211231223201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2717428 + ... + 2794078.

It is an arithmetic number, because the mean of its divisors is an integer number (8866183536).

Almost surely, 2^211231223203 is an apocalyptic number.

211231223203 is a deficient number, since it is larger than the sum of its proper divisors (72486649949).

211231223203 is a wasteful number, since it uses less digits than its factorization.

211231223203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79435.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 211231223203 its reverse (302322132112), we get a palindrome (513553355315).

It can be divided in two parts, 211231 and 223203, that added together give a palindrome (434434).

The spelling of 211231223203 in words is "two hundred eleven billion, two hundred thirty-one million, two hundred twenty-three thousand, two hundred three".