4231221321423 has 8 divisors (see below), whose sum is σ = 5643968391936. Its totient is φ = 2819644232600.

The previous prime is 4231221321347. The next prime is 4231221321427. The reversal of 4231221321423 is 3241231221324.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4231221321423 - 2¹⁷ = 4231221190351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4231221321427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292486983 + ... + 292501448.

It is an arithmetic number, because the mean of its divisors is an integer number (705496048992).

Almost surely, 2^{4231221321423} is an apocalyptic number.

4231221321423 is a deficient number, since it is larger than the sum of its proper divisors (1412747070513).

4231221321423 is a wasteful number, since it uses less digits than its factorization.

4231221321423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584990845.

The product of its digits is 13824, while the sum is 30.

Adding to 4231221321423 its reverse (3241231221324), we get a palindrome (7472452542747).

The spelling of 4231221321423 in words is "four trillion, two hundred thirty-one billion, two hundred twenty-one million, three hundred twenty-one thousand, four hundred twenty-three".