321045343443 has 24 divisors (see below), whose sum is σ = 509111883696. Its totient is φ = 193333608000.

The previous prime is 321045343433. The next prime is 321045343501. The reversal of 321045343443 is 344343540123.

It is a happy number.

321045343443 is a `hidden beast` number, since 3 + 210 + 4 + 5 + 3 + 434 + 4 + 3 = 666.

It is not a de Polignac number, because 321045343443 - 2⁴ = 321045343427 is a prime.

It is a super-2 number, since 2×321045343443² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321045343398 and 321045343407.

It is not an unprimeable number, because it can be changed into a prime (321045343433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10312108 + ... + 10343193.

It is an arithmetic number, because the mean of its divisors is an integer number (21212995154).

Almost surely, 2^321045343443 is an apocalyptic number.

321045343443 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

321045343443 is a deficient number, since it is larger than the sum of its proper divisors (188066540253).

321045343443 is a wasteful number, since it uses less digits than its factorization.

321045343443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20655475 (or 20655472 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 36.

Adding to 321045343443 its reverse (344343540123), we get a palindrome (665388883566).

The spelling of 321045343443 in words is "three hundred twenty-one billion, forty-five million, three hundred forty-three thousand, four hundred forty-three".