323222203231981 has 2 divisors, whose sum is σ = 323222203231982. Its totient is φ = 323222203231980.

The previous prime is 323222203231913. The next prime is 323222203232053. The reversal of 323222203231981 is 189132302222323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295256519980900 + 27965683251081 = 17183030^2 + 5288259^2 .

It is an emirp because it is prime and its reverse (189132302222323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 323222203231981 - 2⁷ = 323222203231853 is a prime.

It is a super-2 number, since 2×323222203231981² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323222203261981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161611101615990 + 161611101615991.

It is an arithmetic number, because the mean of its divisors is an integer number (161611101615991).

Almost surely, 2^{323222203231981} is an apocalyptic number.

It is an amenable number.

323222203231981 is a deficient number, since it is larger than the sum of its proper divisors (1).

323222203231981 is an equidigital number, since it uses as much as digits as its factorization.

323222203231981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 323222203231981 in words is "three hundred twenty-three trillion, two hundred twenty-two billion, two hundred three million, two hundred thirty-one thousand, nine hundred eighty-one".