2124311243 has 4 divisors (see below), whose sum is σ = 2144935728. Its totient is φ = 2103686760.

The previous prime is 2124311221. The next prime is 2124311249. The reversal of 2124311243 is 3421134212.

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 2124311243 - 2³⁰ = 1050569419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124311249) 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, 10312088 + ... + 10312293.

It is an arithmetic number, because the mean of its divisors is an integer number (536233932).

Almost surely, 2^2124311243 is an apocalyptic number.

2124311243 is a deficient number, since it is larger than the sum of its proper divisors (20624485).

2124311243 is a wasteful number, since it uses less digits than its factorization.

2124311243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20624484.

The product of its digits is 1152, while the sum is 23.

The square root of 2124311243 is about 46090.2510624535. The cubic root of 2124311243 is about 1285.5018792846.

Adding to 2124311243 its reverse (3421134212), we get a palindrome (5545445455).

The spelling of 2124311243 in words is "two billion, one hundred twenty-four million, three hundred eleven thousand, two hundred forty-three".