323131102981 has 2 divisors, whose sum is σ = 323131102982. Its totient is φ = 323131102980.

The previous prime is 323131102967. The next prime is 323131102999. The reversal of 323131102981 is 189201131323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321880349025 + 1250753956 = 567345^2 + 35366^2 .

It is a cyclic number.

It is not a de Polignac number, because 323131102981 - 2⁵ = 323131102949 is a prime.

It is a super-2 number, since 2×323131102981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323131102681) 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, 161565551490 + 161565551491.

It is an arithmetic number, because the mean of its divisors is an integer number (161565551491).

Almost surely, 2^323131102981 is an apocalyptic number.

It is an amenable number.

323131102981 is a deficient number, since it is larger than the sum of its proper divisors (1).

323131102981 is an equidigital number, since it uses as much as digits as its factorization.

323131102981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 323131102981 in words is "three hundred twenty-three billion, one hundred thirty-one million, one hundred two thousand, nine hundred eighty-one".