211232311423 has 4 divisors (see below), whose sum is σ = 241408355920. Its totient is φ = 181056266928.

The previous prime is 211232311421. The next prime is 211232311427. The reversal of 211232311423 is 324113232112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211232311423 - 2¹ = 211232311421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211232311421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15088022238 + ... + 15088022251.

It is an arithmetic number, because the mean of its divisors is an integer number (60352088980).

Almost surely, 2^211232311423 is an apocalyptic number.

211232311423 is a deficient number, since it is larger than the sum of its proper divisors (30176044497).

211232311423 is an equidigital number, since it uses as much as digits as its factorization.

211232311423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30176044496.

The product of its digits is 1728, while the sum is 25.

Adding to 211232311423 its reverse (324113232112), we get a palindrome (535345543535).

The spelling of 211232311423 in words is "two hundred eleven billion, two hundred thirty-two million, three hundred eleven thousand, four hundred twenty-three".