20230202981 has 2 divisors, whose sum is σ = 20230202982. Its totient is φ = 20230202980.

The previous prime is 20230202969. The next prime is 20230203017. The reversal of 20230202981 is 18920203202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16659064900 + 3571138081 = 129070^2 + 59759^2 .

It is a cyclic number.

It is not a de Polignac number, because 20230202981 - 2³⁰ = 19156461157 is a prime.

It is a super-2 number, since 2×20230202981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20230202281) 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, 10115101490 + 10115101491.

It is an arithmetic number, because the mean of its divisors is an integer number (10115101491).

Almost surely, 2^20230202981 is an apocalyptic number.

It is an amenable number.

20230202981 is a deficient number, since it is larger than the sum of its proper divisors (1).

20230202981 is an equidigital number, since it uses as much as digits as its factorization.

20230202981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 20230202981 in words is "twenty billion, two hundred thirty million, two hundred two thousand, nine hundred eighty-one".