12313311211 has 4 divisors (see below), whose sum is σ = 12848672592. Its totient is φ = 11777949832.

The previous prime is 12313311169. The next prime is 12313311223. The reversal of 12313311211 is 11211331321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11211331321 = 5273 ⋅2126177.

It is a cyclic number.

It is not a de Polignac number, because 12313311211 - 2²¹ = 12311214059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12313311251) 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, 267680656 + ... + 267680701.

It is an arithmetic number, because the mean of its divisors is an integer number (3212168148).

Almost surely, 2^12313311211 is an apocalyptic number.

12313311211 is a deficient number, since it is larger than the sum of its proper divisors (535361381).

12313311211 is an equidigital number, since it uses as much as digits as its factorization.

12313311211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535361380.

The product of its digits is 108, while the sum is 19.

Adding to 12313311211 its reverse (11211331321), we get a palindrome (23524642532).

The spelling of 12313311211 in words is "twelve billion, three hundred thirteen million, three hundred eleven thousand, two hundred eleven".