2311311223 has 16 divisors (see below), whose sum is σ = 2585721600. Its totient is φ = 2051320320.

The previous prime is 2311311199. The next prime is 2311311241. The reversal of 2311311223 is 3221131132.

It is a cyclic number.

It is not a de Polignac number, because 2311311223 - 2²¹ = 2309214071 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 2311311223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311311283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78138 + ... + 103576.

It is an arithmetic number, because the mean of its divisors is an integer number (161607600).

Almost surely, 2^2311311223 is an apocalyptic number.

2311311223 is a deficient number, since it is larger than the sum of its proper divisors (274410377).

2311311223 is a wasteful number, since it uses less digits than its factorization.

2311311223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25722.

The product of its digits is 216, while the sum is 19.

The square root of 2311311223 is about 48076.0982505860. The cubic root of 2311311223 is about 1322.1664803391.

Adding to 2311311223 its reverse (3221131132), we get a palindrome (5532442355).

The spelling of 2311311223 in words is "two billion, three hundred eleven million, three hundred eleven thousand, two hundred twenty-three".