4223221831 has 4 divisors (see below), whose sum is σ = 4368850200. Its totient is φ = 4077593464.

The previous prime is 4223221817. The next prime is 4223221837. The reversal of 4223221831 is 1381223224.

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 4223221831 - 2⁵ = 4223221799 is a prime.

It is a super-2 number, since 2×4223221831² = 35671205267669985122, 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 4223221831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223221837) 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, 72814141 + ... + 72814198.

It is an arithmetic number, because the mean of its divisors is an integer number (1092212550).

Almost surely, 2^4223221831 is an apocalyptic number.

4223221831 is a deficient number, since it is larger than the sum of its proper divisors (145628369).

4223221831 is a wasteful number, since it uses less digits than its factorization.

4223221831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145628368.

The product of its digits is 4608, while the sum is 28.

The square root of 4223221831 is about 64986.3203374372. The cubic root of 4223221831 is about 1616.3967354951.

The spelling of 4223221831 in words is "four billion, two hundred twenty-three million, two hundred twenty-one thousand, eight hundred thirty-one".