4023521321 has 8 divisors (see below), whose sum is σ = 4063223520. Its totient is φ = 3983858208.

The previous prime is 4023521317. The next prime is 4023521357. The reversal of 4023521321 is 1231253204.

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 4023521321 - 2² = 4023521317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4023521371) 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, 224525 + ... + 241781.

It is an arithmetic number, because the mean of its divisors is an integer number (507902940).

Almost surely, 2^4023521321 is an apocalyptic number.

It is an amenable number.

4023521321 is a deficient number, since it is larger than the sum of its proper divisors (39702199).

4023521321 is a wasteful number, since it uses less digits than its factorization.

4023521321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19543.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 4023521321 is about 63431.2330086685. The cubic root of 4023521321 is about 1590.5064537778.

Adding to 4023521321 its reverse (1231253204), we get a palindrome (5254774525).

The spelling of 4023521321 in words is "four billion, twenty-three million, five hundred twenty-one thousand, three hundred twenty-one".