4021431223 has 4 divisors (see below), whose sum is σ = 4024552320. Its totient is φ = 4018310128.

The previous prime is 4021431221. The next prime is 4021431229. The reversal of 4021431223 is 3221341204.

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 4021431223 - 2¹ = 4021431221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4021431194 and 4021431203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021431221) 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, 1558615 + ... + 1561192.

It is an arithmetic number, because the mean of its divisors is an integer number (1006138080).

Almost surely, 2^4021431223 is an apocalyptic number.

4021431223 is a deficient number, since it is larger than the sum of its proper divisors (3121097).

4021431223 is a wasteful number, since it uses less digits than its factorization.

4021431223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121096.

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

The square root of 4021431223 is about 63414.7555620930. The cubic root of 4021431223 is about 1590.2309993615.

Adding to 4021431223 its reverse (3221341204), we get a palindrome (7242772427).

The spelling of 4021431223 in words is "four billion, twenty-one million, four hundred thirty-one thousand, two hundred twenty-three".