2321311123 has 4 divisors (see below), whose sum is σ = 2330343720. Its totient is φ = 2312278528.

The previous prime is 2321311067. The next prime is 2321311169. The reversal of 2321311123 is 3211131232.

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 2321311123 - 2¹³ = 2321302931 is a prime.

It is a super-2 number, since 2×2321311123² = 10776970659527042258, which contains 22 as substring.

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 2321311123.

It is not an unprimeable number, because it can be changed into a prime (2321318123) 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, 4515913 + ... + 4516426.

It is an arithmetic number, because the mean of its divisors is an integer number (582585930).

Almost surely, 2^2321311123 is an apocalyptic number.

2321311123 is a deficient number, since it is larger than the sum of its proper divisors (9032597).

2321311123 is an equidigital number, since it uses as much as digits as its factorization.

2321311123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9032596.

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

The square root of 2321311123 is about 48179.9867476113. The cubic root of 2321311123 is about 1324.0705237350.

Adding to 2321311123 its reverse (3211131232), we get a palindrome (5532442355).

The spelling of 2321311123 in words is "two billion, three hundred twenty-one million, three hundred eleven thousand, one hundred twenty-three".