2313329981 has 2 divisors, whose sum is σ = 2313329982. Its totient is φ = 2313329980.

The previous prime is 2313329951. The next prime is 2313330001. The reversal of 2313329981 is 1899233132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2123827225 + 189502756 = 46085^2 + 13766^2 .

It is a cyclic number.

It is not a de Polignac number, because 2313329981 - 2¹⁰ = 2313328957 is a prime.

It is a super-2 number, since 2×2313329981² = 10702991201986920722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2313329911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156664990 + 1156664991.

It is an arithmetic number, because the mean of its divisors is an integer number (1156664991).

Almost surely, 2^2313329981 is an apocalyptic number.

It is an amenable number.

2313329981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2313329981 is an equidigital number, since it uses as much as digits as its factorization.

2313329981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 2313329981 is about 48097.0891115045. The cubic root of 2313329981 is about 1322.5513062644.

The spelling of 2313329981 in words is "two billion, three hundred thirteen million, three hundred twenty-nine thousand, nine hundred eighty-one".