4431314312321 has 4 divisors (see below), whose sum is σ = 4772184644052. Its totient is φ = 4090443980592.

The previous prime is 4431314312297. The next prime is 4431314312351. The reversal of 4431314312321 is 1232134131344.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 308530257025 + 4122784055296 = 555455^2 + 2030464^2 .

It is a cyclic number.

It is not a de Polignac number, because 4431314312321 - 2¹⁴ = 4431314295937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4431314312351) 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, 170435165846 + ... + 170435165871.

It is an arithmetic number, because the mean of its divisors is an integer number (1193046161013).

Almost surely, 2^{4431314312321} is an apocalyptic number.

It is an amenable number.

4431314312321 is a deficient number, since it is larger than the sum of its proper divisors (340870331731).

4431314312321 is a wasteful number, since it uses less digits than its factorization.

4431314312321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340870331730.

The product of its digits is 20736, while the sum is 32.

Adding to 4431314312321 its reverse (1232134131344), we get a palindrome (5663448443665).

The spelling of 4431314312321 in words is "four trillion, four hundred thirty-one billion, three hundred fourteen million, three hundred twelve thousand, three hundred twenty-one".