2031123223 has 4 divisors (see below), whose sum is σ = 2041757568. Its totient is φ = 2020488880.

The previous prime is 2031123221. The next prime is 2031123299. The reversal of 2031123223 is 3223211302.

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 2031123223 - 2¹ = 2031123221 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 2031123223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031123221) 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, 5316886 + ... + 5317267.

It is an arithmetic number, because the mean of its divisors is an integer number (510439392).

Almost surely, 2^2031123223 is an apocalyptic number.

2031123223 is a deficient number, since it is larger than the sum of its proper divisors (10634345).

2031123223 is a wasteful number, since it uses less digits than its factorization.

2031123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10634344.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2031123223 is about 45067.9844568181. The cubic root of 2031123223 is about 1266.4229064712.

Adding to 2031123223 its reverse (3223211302), we get a palindrome (5254334525).

It can be divided in two parts, 20311 and 23223, that added together give a palindrome (43534).

The spelling of 2031123223 in words is "two billion, thirty-one million, one hundred twenty-three thousand, two hundred twenty-three".