321230999993 has 2 divisors, whose sum is σ = 321230999994. Its totient is φ = 321230999992.

The previous prime is 321230999983. The next prime is 321231000061. The reversal of 321230999993 is 399999032123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175919847184 + 145311152809 = 419428^2 + 381197^2 .

It is an emirp because it is prime and its reverse (399999032123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321230999993 - 2²⁸ = 320962564537 is a prime.

It is not a weakly prime, because it can be changed into another prime (321230999983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160615499996 + 160615499997.

It is an arithmetic number, because the mean of its divisors is an integer number (160615499997).

Almost surely, 2^321230999993 is an apocalyptic number.

It is an amenable number.

321230999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

321230999993 is an equidigital number, since it uses as much as digits as its factorization.

321230999993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6377292, while the sum is 59.

The spelling of 321230999993 in words is "three hundred twenty-one billion, two hundred thirty million, nine hundred ninety-nine thousand, nine hundred ninety-three".