323132445421 has 4 divisors (see below), whose sum is σ = 323477304892. Its totient is φ = 322787585952.

The previous prime is 323132445359. The next prime is 323132445439. The reversal of 323132445421 is 124544231323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124544231323 = 75583 ⋅1647781.

It can be written as a sum of positive squares in 2 ways, for example, as 132503280100 + 190629165321 = 364010^2 + 436611^2 .

It is a cyclic number.

It is not a de Polignac number, because 323132445421 - 2¹¹ = 323132443373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323132445491) 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, 172428330 + ... + 172430203.

It is an arithmetic number, because the mean of its divisors is an integer number (80869326223).

Almost surely, 2^323132445421 is an apocalyptic number.

It is an amenable number.

323132445421 is a deficient number, since it is larger than the sum of its proper divisors (344859471).

323132445421 is an equidigital number, since it uses as much as digits as its factorization.

323132445421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344859470.

The product of its digits is 69120, while the sum is 34.

Adding to 323132445421 its reverse (124544231323), we get a palindrome (447676676744).

The spelling of 323132445421 in words is "three hundred twenty-three billion, one hundred thirty-two million, four hundred forty-five thousand, four hundred twenty-one".