230723420189 has 2 divisors, whose sum is σ = 230723420190. Its totient is φ = 230723420188.

The previous prime is 230723420183. The next prime is 230723420197. The reversal of 230723420189 is 981024327032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182941832089 + 47781588100 = 427717^2 + 218590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230723420189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230723420183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115361710094 + 115361710095.

It is an arithmetic number, because the mean of its divisors is an integer number (115361710095).

Almost surely, 2^230723420189 is an apocalyptic number.

It is an amenable number.

230723420189 is a deficient number, since it is larger than the sum of its proper divisors (1).

230723420189 is an equidigital number, since it uses as much as digits as its factorization.

230723420189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 230723420189 in words is "two hundred thirty billion, seven hundred twenty-three million, four hundred twenty thousand, one hundred eighty-nine".