2023109981 has 2 divisors, whose sum is σ = 2023109982. Its totient is φ = 2023109980.

The previous prime is 2023109951. The next prime is 2023109993. The reversal of 2023109981 is 1899013202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1759047481 + 264062500 = 41941^2 + 16250^2 .

It is a cyclic number.

It is not a de Polignac number, because 2023109981 - 2²² = 2018915677 is a prime.

It is a super-2 number, since 2×2023109981² = 8185947990443640722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2023109951) 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, 1011554990 + 1011554991.

It is an arithmetic number, because the mean of its divisors is an integer number (1011554991).

Almost surely, 2^2023109981 is an apocalyptic number.

It is an amenable number.

2023109981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2023109981 is an equidigital number, since it uses as much as digits as its factorization.

2023109981 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 35.

The square root of 2023109981 is about 44978.9948865023. The cubic root of 2023109981 is about 1264.7552695654.

The spelling of 2023109981 in words is "two billion, twenty-three million, one hundred nine thousand, nine hundred eighty-one".