323211005554981 has 2 divisors, whose sum is σ = 323211005554982. Its totient is φ = 323211005554980.

The previous prime is 323211005554963. The next prime is 323211005555021. The reversal of 323211005554981 is 189455500112323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297419894089956 + 25791111465025 = 17245866^2 + 5078495^2 .

It is a cyclic number.

It is not a de Polignac number, because 323211005554981 - 2¹⁷ = 323211005423909 is a prime.

It is a super-2 number, since 2×323211005554981² (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 (323211005554901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161605502777490 + 161605502777491.

It is an arithmetic number, because the mean of its divisors is an integer number (161605502777491).

Almost surely, 2^{323211005554981} is an apocalyptic number.

It is an amenable number.

323211005554981 is a deficient number, since it is larger than the sum of its proper divisors (1).

323211005554981 is an equidigital number, since it uses as much as digits as its factorization.

323211005554981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296000, while the sum is 49.

The spelling of 323211005554981 in words is "three hundred twenty-three trillion, two hundred eleven billion, five million, five hundred fifty-four thousand, nine hundred eighty-one".