211223313023 has 16 divisors (see below), whose sum is σ = 213148700160. Its totient is φ = 209308230144.

The previous prime is 211223312957. The next prime is 211223313071. The reversal of 211223313023 is 320313322112.

It is a cyclic number.

It is not a de Polignac number, because 211223313023 - 2²⁰ = 211222264447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211223313023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220313023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63182090 + ... + 63185432.

It is an arithmetic number, because the mean of its divisors is an integer number (13321793760).

Almost surely, 2^211223313023 is an apocalyptic number.

211223313023 is a deficient number, since it is larger than the sum of its proper divisors (1925387137).

211223313023 is a wasteful number, since it uses less digits than its factorization.

211223313023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 211223313023 its reverse (320313322112), we get a palindrome (531536635135).

The spelling of 211223313023 in words is "two hundred eleven billion, two hundred twenty-three million, three hundred thirteen thousand, twenty-three".