211311310323 has 4 divisors (see below), whose sum is σ = 281748413768. Its totient is φ = 140874206880.

The previous prime is 211311310289. The next prime is 211311310351. The reversal of 211311310323 is 323013113112.

It is a happy number.

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

It is not a de Polignac number, because 211311310323 - 2¹⁴ = 211311293939 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 211311310323.

It is not an unprimeable number, because it can be changed into a prime (211311310393) 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, 35218551718 + ... + 35218551723.

It is an arithmetic number, because the mean of its divisors is an integer number (70437103442).

Almost surely, 2^211311310323 is an apocalyptic number.

211311310323 is a deficient number, since it is larger than the sum of its proper divisors (70437103445).

211311310323 is an equidigital number, since it uses as much as digits as its factorization.

211311310323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70437103444.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 211311310323 its reverse (323013113112), we get a palindrome (534324423435).

The spelling of 211311310323 in words is "two hundred eleven billion, three hundred eleven million, three hundred ten thousand, three hundred twenty-three".