323121440343 has 64 divisors (see below), whose sum is σ = 500281295360. Its totient is φ = 183800752128.

The previous prime is 323121440303. The next prime is 323121440347. The reversal of 323121440343 is 343044121323.

It is a happy number.

It is not a de Polignac number, because 323121440343 - 2¹⁴ = 323121423959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 323121440343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323121440347) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32909571 + ... + 32919387.

It is an arithmetic number, because the mean of its divisors is an integer number (7816895240).

Almost surely, 2^323121440343 is an apocalyptic number.

323121440343 is a deficient number, since it is larger than the sum of its proper divisors (177159855017).

323121440343 is a wasteful number, since it uses less digits than its factorization.

323121440343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10928.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 323121440343 its reverse (343044121323), we get a palindrome (666165561666).

The spelling of 323121440343 in words is "three hundred twenty-three billion, one hundred twenty-one million, four hundred forty thousand, three hundred forty-three".