211231120311223 has 8 divisors (see below), whose sum is σ = 211719564268128. Its totient is φ = 210742679176704.

The previous prime is 211231120311193. The next prime is 211231120311269. The reversal of 211231120311223 is 322113021132112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211231120311223 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 (211231120311283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262317711 + ... + 263121727.

It is an arithmetic number, because the mean of its divisors is an integer number (26464945533516).

Almost surely, 2^{211231120311223} is an apocalyptic number.

211231120311223 is a deficient number, since it is larger than the sum of its proper divisors (488443956905).

211231120311223 is an equidigital number, since it uses as much as digits as its factorization.

211231120311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411193.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 211231120311223 its reverse (322113021132112), we get a palindrome (533344141443335).

The spelling of 211231120311223 in words is "two hundred eleven trillion, two hundred thirty-one billion, one hundred twenty million, three hundred eleven thousand, two hundred twenty-three".