321243044053 has 2 divisors, whose sum is σ = 321243044054. Its totient is φ = 321243044052.

The previous prime is 321243043993. The next prime is 321243044117. The reversal of 321243044053 is 350440342123.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199900198404 + 121342845649 = 447102^2 + 348343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321243044053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321243044153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160621522026 + 160621522027.

It is an arithmetic number, because the mean of its divisors is an integer number (160621522027).

Almost surely, 2^321243044053 is an apocalyptic number.

It is an amenable number.

321243044053 is a deficient number, since it is larger than the sum of its proper divisors (1).

321243044053 is an equidigital number, since it uses as much as digits as its factorization.

321243044053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 321243044053 its reverse (350440342123), we get a palindrome (671683386176).

The spelling of 321243044053 in words is "three hundred twenty-one billion, two hundred forty-three million, forty-four thousand, fifty-three".