2143312223 has 4 divisors (see below), whose sum is σ = 2308182408. Its totient is φ = 1978442040.

The previous prime is 2143312219. The next prime is 2143312231. The reversal of 2143312223 is 3222133412.

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 2143312223 - 2² = 2143312219 is a prime.

It is a super-2 number, since 2×2143312223² = 9187574570522403458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143312123) 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 3 ways as a sum of consecutive naturals, for example, 82435073 + ... + 82435098.

It is an arithmetic number, because the mean of its divisors is an integer number (577045602).

Almost surely, 2^2143312223 is an apocalyptic number.

2143312223 is a deficient number, since it is larger than the sum of its proper divisors (164870185).

2143312223 is a wasteful number, since it uses less digits than its factorization.

2143312223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164870184.

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

The square root of 2143312223 is about 46295.9201550201. The cubic root of 2143312223 is about 1289.3232479771.

Adding to 2143312223 its reverse (3222133412), we get a palindrome (5365445635).

The spelling of 2143312223 in words is "two billion, one hundred forty-three million, three hundred twelve thousand, two hundred twenty-three".