321320334001423 has 4 divisors (see below), whose sum is σ = 321320666972448. Its totient is φ = 321320001030400.

The previous prime is 321320334001409. The next prime is 321320334001441. The reversal of 321320334001423 is 324100433023123.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321320334001423 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 (321320334001523) 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, 165033778 + ... + 166969423.

It is an arithmetic number, because the mean of its divisors is an integer number (80330166743112).

Almost surely, 2^{321320334001423} is an apocalyptic number.

321320334001423 is a deficient number, since it is larger than the sum of its proper divisors (332971025).

321320334001423 is an equidigital number, since it uses as much as digits as its factorization.

321320334001423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332971024.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 321320334001423 its reverse (324100433023123), we get a palindrome (645420767024546).

The spelling of 321320334001423 in words is "three hundred twenty-one trillion, three hundred twenty billion, three hundred thirty-four million, one thousand, four hundred twenty-three".