2312321243 has 4 divisors (see below), whose sum is σ = 2312482728. Its totient is φ = 2312159760.

The previous prime is 2312321213. The next prime is 2312321251. The reversal of 2312321243 is 3421232132.

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 2312321243 - 2²⁶ = 2245212379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312321203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56921 + ... + 88682.

It is an arithmetic number, because the mean of its divisors is an integer number (578120682).

Almost surely, 2^2312321243 is an apocalyptic number.

2312321243 is a deficient number, since it is larger than the sum of its proper divisors (161485).

2312321243 is a wasteful number, since it uses less digits than its factorization.

2312321243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161484.

The product of its digits is 1728, while the sum is 23.

The square root of 2312321243 is about 48086.6014914758. The cubic root of 2312321243 is about 1322.3590434899.

Adding to 2312321243 its reverse (3421232132), we get a palindrome (5733553375).

The spelling of 2312321243 in words is "two billion, three hundred twelve million, three hundred twenty-one thousand, two hundred forty-three".