20230131122189 has 2 divisors, whose sum is σ = 20230131122190. Its totient is φ = 20230131122188.

The previous prime is 20230131122099. The next prime is 20230131122233. The reversal of 20230131122189 is 98122113103202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19261170450025 + 968960672164 = 4388755^2 + 984358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20230131122189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20230131122689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115065561094 + 10115065561095.

It is an arithmetic number, because the mean of its divisors is an integer number (10115065561095).

Almost surely, 2^{20230131122189} is an apocalyptic number.

It is an amenable number.

20230131122189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20230131122189 is an equidigital number, since it uses as much as digits as its factorization.

20230131122189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 20230131122189 in words is "twenty trillion, two hundred thirty billion, one hundred thirty-one million, one hundred twenty-two thousand, one hundred eighty-nine".