321424344423403 has 4 divisors (see below), whose sum is σ = 346149293994448. Its totient is φ = 296699394852360.

The previous prime is 321424344423379. The next prime is 321424344423491. The reversal of 321424344423403 is 304324443424123.

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-321424344423403 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 321424344423403.

It is not an unprimeable number, because it can be changed into a prime (321424314423403) 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, 12362474785503 + ... + 12362474785528.

It is an arithmetic number, because the mean of its divisors is an integer number (86537323498612).

Almost surely, 2^{321424344423403} is an apocalyptic number.

321424344423403 is a deficient number, since it is larger than the sum of its proper divisors (24724949571045).

321424344423403 is a wasteful number, since it uses less digits than its factorization.

321424344423403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24724949571044.

The product of its (nonzero) digits is 2654208, while the sum is 43.

Adding to 321424344423403 its reverse (304324443424123), we get a palindrome (625748787847526).

The spelling of 321424344423403 in words is "three hundred twenty-one trillion, four hundred twenty-four billion, three hundred forty-four million, four hundred twenty-three thousand, four hundred three".