211231011222323 has 12 divisors (see below), whose sum is σ = 213942159195408. Its totient is φ = 208553796799920.

The previous prime is 211231011222293. The next prime is 211231011222359. The reversal of 211231011222323 is 323222110132112.

It is a de Polignac number, because none of the positive numbers 2^k-211231011222323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211231011222292 and 211231011222301.

It is not an unprimeable number, because it can be changed into a prime (211231011222223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 437758490 + ... + 438240752.

It is an arithmetic number, because the mean of its divisors is an integer number (17828513266284).

Almost surely, 2^{211231011222323} is an apocalyptic number.

211231011222323 is a deficient number, since it is larger than the sum of its proper divisors (2711147973085).

211231011222323 is an frugal number, since it uses more digits than its factorization.

211231011222323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552602 (or 552523 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 211231011222323 its reverse (323222110132112), we get a palindrome (534453121354435).

The spelling of 211231011222323 in words is "two hundred eleven trillion, two hundred thirty-one billion, eleven million, two hundred twenty-two thousand, three hundred twenty-three".