323121100021193 has 2 divisors, whose sum is σ = 323121100021194. Its totient is φ = 323121100021192.

The previous prime is 323121100021189. The next prime is 323121100021261. The reversal of 323121100021193 is 391120001121323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249938772540304 + 73182327480889 = 15809452^2 + 8554667^2 .

It is an emirp because it is prime and its reverse (391120001121323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 323121100021193 - 2² = 323121100021189 is a prime.

It is not a weakly prime, because it can be changed into another prime (323121100071193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161560550010596 + 161560550010597.

It is an arithmetic number, because the mean of its divisors is an integer number (161560550010597).

Almost surely, 2^{323121100021193} is an apocalyptic number.

It is an amenable number.

323121100021193 is a deficient number, since it is larger than the sum of its proper divisors (1).

323121100021193 is an equidigital number, since it uses as much as digits as its factorization.

323121100021193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 323121100021193 in words is "three hundred twenty-three trillion, one hundred twenty-one billion, one hundred million, twenty-one thousand, one hundred ninety-three".