4431220123 has 4 divisors (see below), whose sum is σ = 4834058328. Its totient is φ = 4028381920.

The previous prime is 4431220117. The next prime is 4431220127. The reversal of 4431220123 is 3210221344.

4431220123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4431220123 - 2¹⁷ = 4431089051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4431220094 and 4431220103.

It is not an unprimeable number, because it can be changed into a prime (4431220127) 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, 201419086 + ... + 201419107.

It is an arithmetic number, because the mean of its divisors is an integer number (1208514582).

Almost surely, 2^4431220123 is an apocalyptic number.

4431220123 is a deficient number, since it is larger than the sum of its proper divisors (402838205).

4431220123 is a wasteful number, since it uses less digits than its factorization.

4431220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402838204.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4431220123 is about 66567.4103672360. The cubic root of 4431220123 is about 1642.5090637804.

Adding to 4431220123 its reverse (3210221344), we get a palindrome (7641441467).

The spelling of 4431220123 in words is "four billion, four hundred thirty-one million, two hundred twenty thousand, one hundred twenty-three".