20231098889 has 2 divisors, whose sum is σ = 20231098890. Its totient is φ = 20231098888.

The previous prime is 20231098859. The next prime is 20231098907. The reversal of 20231098889 is 98889013202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15001350400 + 5229748489 = 122480^2 + 72317^2 .

It is a cyclic number.

It is not a de Polignac number, because 20231098889 - 2¹⁶ = 20231033353 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20231098859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115549444 + 10115549445.

It is an arithmetic number, because the mean of its divisors is an integer number (10115549445).

Almost surely, 2^20231098889 is an apocalyptic number.

It is an amenable number.

20231098889 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231098889 is an equidigital number, since it uses as much as digits as its factorization.

20231098889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 20231098889 in words is "twenty billion, two hundred thirty-one million, ninety-eight thousand, eight hundred eighty-nine".